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1
Huber, Marsha M. "Measurement of Restaurant Manager Perceptions of Restaurant Management Information Systems." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1046698635.
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Ebertsohn, Nolan Wade. "The measurement of information system project success." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/97271.
Повний текст джерелаАнотація:
Thesis (MBA)--Stellenbosch University, 2014.ENGLISH ABSTRACT: Ensuring the delivery of an investment is crucial for organisations as significant amounts of operating and capital expenditure is spent on information systems. Regrettably, many organisations today have no accurate techniques for forecasting and warranting the success of information system projects and many rely on the traditional project management triple constraint criteria alone, which encapsulate time, cost, and quality. Many chief executive officers (CEOs), chief information officers (CIOs) and other executives have difficulty in justifying their investments and return on investment (ROI) in information systems. Since the 1970s many articles have been written and much research conducted on the topic of information system project success. However, there is still no consensus on an agreed upon definition and robust methodology to measure the success of information system projects (ISPs). This research attempted to determine if organisations measure the success of their ISPs. In addition, the researcher aimed to pinpoint what key success factors and critical success criteria organisations use, and how these are applied to measure information system project success (ISPS). To reach these objectives, qualitative research was conducted by means of a study of the literature on the topic, a pilot survey, and semi-structured interviews in order to gather expert opinions and information pertaining to the measurement of ISPS in industry. It was found that most project managers and companies still rely on the traditional triple constraint to determine the success of their information system projects. Moreover, this phenomenon exists due to a lack of knowledge on the topic, top management buy-in, time and resources, and a perception that the costs to get a measurement system in place outweigh the benefits to be gained from it.
3
Lloyd, Natasha. "Clutter measurement and reduction for enhanced information visualization." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-011206-232808/.
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Pita, Zijad, and zijad pita@rmit edu au. "Strategic Information Systems Planning (SISP) in Australia Assessment and Measurement." RMIT University. Business Information Technology, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080514.162332.
Повний текст джерелаАнотація:
Strategic Information Systems Planning (SISP) is an important activity for helping Chief Information Executives (CIOs) and top management identify strategic applications and align Information Technology (IT) with business needs. Like all strategic planning, SISP requires measuring how well SISP is done and how planning is improving over time. The measurement of these intangibles is a complex exercise. There have been few efforts undertaken in the Information Systems (IS) literature to formally develop a model for assessing and measuring SISP efforts. In this study, two models were proposed: a five-stage SISP maturity model for defining SISP maturity and another one for assessing the degree of SISP maturity. The five SISP maturity levels were defined as: Rudimentary Planning, Ineffectual Planning, Attainable Planning, Sustainable Planning, and Adaptable Planning. The assessment model was structured as a third-order system, where eight first-order dimensions were termed as Form and Content, Collaboration, Policies, Stakeholders' Designation, Knowledge Bank, Technology, Time Dimension, and Viability. The first-order dimensions were grouped into three second-order constructs, namely Effectiveness, Efficiency and Manoeuvrability, which ultimately characterise the level of SISP success. This model was used to establish a theoretical benchmark for each SISP maturity level. To model the level of SISP maturity, an 'Integral Engineering' approach was established and the Analytic Network Process (ANP) theory was used. The study is a novel approach in using ANP to synthesize the measures of the various SISP constructs into a single overall measure of SISP maturity level. A survey was performed and data collected from 260 Australian organisations to examine the degree of SISP maturity and the relationships among SISP constructs. Structural equation modelling (SEM) was used to test the fit between the hypothesized model and the survey data The models were applied to the data collected and the findings suggested that the models fit the data well. While Effectiveness and Efficiency are well recognised planning constructs, Manoeuvrability as a measure of planning dynamics is not acknowledged in the literature as an equally important construct. This study confirmed a strong correlation between Manoeuvrability and SISP success and found it to be more important than the Efficiency construct. The empirical data did not confirm the existence of Rudimentary and Ineffectual planning levels of SISP maturity Australia-wide. SISP maturity in the majority of Australian organisations is at Sustainable and Attainable planning levels. A small percentage of the surveyed organisations have actually reached the highest planning level (Adaptable planning). The empirical data showed that current SISP is lacking strategic dimension and that the recently popularised one-year planning horizon may not be the best choice. Australian organisations did not consider the strategic relevance of IT as the key objective. IT/IS was seen as a business enabler, thus the strategic advan tage associated with IT came as a secondary objective.
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Lloyd, Natasha. "Clutter Measurement and Reduction for Enhanced Information Visualization." Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/67.
Повний текст джерелаАнотація:
The effectiveness of information visualization largely depends on the ease and accuracy with which users can access the information. Visual clutter in a display can detract from a user's ability to properly read the information. An ideal visualization needs to maximize the visibility of patterns and structure and minimize the clutter present. Thus far, there has been surprisingly little work done in finding quantitative ways to measure clutter in information visualizations. The goal of this project was to create clutter measurement and reduction techniques that minimize the presence of visual clutter and maximize a user's ability to accurately read the data. These methods were tested and evaluated on a number of visualizations depicting domestic air traffic data.
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Eklund, Joakim, and Ebba Nyberg. "Utvecklingen av ett enkelt mätverktyg för informationssäkerhetsbeteende. Information Security Behavior Measurement (ISBM)." Thesis, Örebro universitet, Handelshögskolan vid Örebro Universitet, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-48921.
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Chong, Hyonsong. "IS-MBNQA: A new framework for the relationship between Information Systems and organizational quality." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc3060/.
Повний текст джерелаАнотація:
Despite numerous frameworks and models proposed in the literature, Information Systems (IS) assessment still remains elusive. In addition, little agreement exists on the contribution of the IS function within an organization and on how IS is related to the other organizational dimensions. Frameworks that show the relationship between IS and the organization are in the developmental stage and this work proposes a more comprehensive framework to assist in better understanding the relationship between IS and organizational quality. This research examines two popular IS quality assessment frameworks - Malcolm Baldrige National Quality Award (MBNQA) and Information Systems Assessment (ISA) - and suggests a new framework, IS-MBNQA. This work integrates these two IS quality assessment frameworks into a single comprehensive model that provides a holistic view on how IS quality is interrelated to organizational quality. The existing two IS assessment frameworks attempted to measure IS quality at different levels within an organization. The MBNQA model is the most comprehensive quality framework because it takes an organization wide perspective. On the other hand, ISA employs an IS specific perspective and reflects the relationships of eight major IS success dimensions. ISA is a modified version of DeLone & McLean's model with the inclusion of a success factor for Service Quality. For this study, survey instruments are developed from the MBNQA and ISA frameworks and they are consolidated to allow testing of the single IS-MBNQA framework. Exploratory factor analysis is performed for instrument refinement and confirmatory factor analysis for validity of the models. The instruments developed in this work are utilized as a foundation for identifying the relationships among the dimensions within and between each model. A major contribution of this work is the validation of the 2000 MBNQA model and the extension of existing models/frameworks to better explain the IS contribution to an organization.
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Saunders, Gary. "An Infrastructure for Performance Measurement and Comparison of Information Retrieval Solutions." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2604.pdf.
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Liles, Stewart Whitfield. "On the characterization and analysis of system of systems architectures." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3281.
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Thesis (Ph.D.)--George Mason University, 2008.Vita: p. 192. Thesis director: Alexander H. Levis. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Information Technology. Title from PDF t.p. (viewed Jan. 11, 2009). Includes bibliographical references (p. 184-191). Also issued in print.
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Kurian, Roger Sam. "The benefits to management of using GQM, continuous GQM, and V-GQM in a measurement program." Kent State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=kent1248130473.
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Aktunc, Ozgur. "An entropy-based measurement framework for component-based hierarchical systems." Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2008r/aktunc.pdf.
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Thesis (Ph. D.)--University of Alabama at Birmingham, 2007.Additional advisors: Gary J. Grimes, Chittoor V. Ramamoorthy, Murat N. Tanju, Gregg L. Vaughn, B. Earl Wells. Description based on contents viewed Feb. 12, 2009; title from PDF t.p. Includes bibliographical references (p. 150-158).
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Purello, Michael. "Development of a computerized information system which supports measurement and assessment of AEGIS Combat Systems Center performance." Master's thesis, This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-12232009-020334/.
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Hingane, Amruta Laxman. "A POT of Software Metrics: A Physiological Overturn of Technology of Software Metrics." Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1227118085.
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Hassan, Eid Awad Abd El-Sayed. "A theoretical and empirical study of performance measurement : a challenge for management accounting information systems." Thesis, University of Hull, 2001. http://hydra.hull.ac.uk/resources/hull:5607.
Повний текст джерелаАнотація:
Management accounting information systems (MAISs) play an important role in supporting continuous improvement efforts and management decision-making activities. MAISs provide manufacturing companies with internal financial and some non-financial information required for the three essential functions of planning, controlling and performance measurement. According to Drury (2000), "management accounting systems accumulate, classify, summarize and report information that will assist employees within an organization in their decision-making, planning, control and performance measurement activities". Performance measurement is one of the most important aspects of MAISs. The development of the concept of performance measurement is the direct result of several dramatic changes in the way today's business environment is structured and how companies employ world class manufacturing (WCM) philosophies or techniques to compete for marketplace advantages. These changes have impacted on the way companies are organised and in skills required to manage, motivate, and empower the workforce to support continuous improvement. Other changes, especially in the Egyptian manufacturing environment, have come from the effect of international agreements, such as General Agreement on Tariffs and Trade (GATT) and World Trade Organisation (WTO), and organisational pressures, such as the ISO 9000 programme. This thesis presents a theoretical and empirical study to determine 'what', why', and 'how' performance measurement systems (PMSs) are changing, as a challenge for MAISs, with the adoption of Just in Time (JIT) and Total Quality Management (TQM) philosophies. A discussion of these questions is presented in Chapter 8. In order to investigate how PMSs can best be used to support the continuous improvement philosophy of JIT and TQM, a model for developing PMSs in a JIT and TQM environment was constructed (see Figure 8.1). This study has used a qualitative method of research. The research findings and the model for developing PMSs in a JIT and TQM environment have been obtained from a literature review and data collected from two Egyptian pharmaceutical companies. The model, as it stands, is exploratory in nature. It proposes a body of ideas that form a new theory formulated for developing PMSs in a JIT and TQM environment. The model could be applicable to manufacturing companies, which have started or plan to implement JIT and TQM philosophies, since it provides a framework for the development and use of PMSs, rather than prescriptive lists of measures and reports that should be used. Norreklit (2000) indicated that models are needed which deepen our understanding of how PMSs are created, and to this end MAISs research has to make its contribution.
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Lui, Tak Ching. "Service quality of information systems development : its impacts on system success and an initial attempt to develop a new measurement instrument." HKBU Institutional Repository, 2000. http://repository.hkbu.edu.hk/etd_ra/231.
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Taweel, Alameen Khalifa. "The role of management accounting information systems in traditional and modern performance measurement systems : an empirical study in Libyan banks." Thesis, University of Lincoln, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442488.
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Murthy, Sindhu Dharani. "Ikriya: Simulating Software Quality Enhancement With Selected Replacement Policies." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1247.
Повний текст джерелаАнотація:
The quality of information systems in any organization helps to determine theefficiency of the organization. Many organizations maintain a custom software portfolio, whose quality is important to the organization. Management would like to optimize the portfolio’s quality. Decisions about software replacement or enhancement are made based on organizational needs and priorities. The development resources allocated help in determining the quality of new software, and should be put to optimal use. Enhancing existing software might sound cheap and easy but it is not always efficient. This thesis proposes a simulation model - iKriya - for this problem. It explores the consequences of various development and maintenance policies which might be applied.These depend on the state of existing software portfolio, the queue and properties of proposed projects, and the resources available. Optimal decisions are made by the simulator by taking the above mentioned factors into consideration.
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Abdallah, Salam. "Unravelling methodologies: a theory building approach." Curtin University of Technology, School of Information Systems, 2005. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=16417.
Повний текст джерелаАнотація:
Problem solving methodologies in IS are numerous, varied in objectives and scope, and commonly suffer consequences of deviation and rejection. This research investigates the essence of methodologies in order to understand and to address these consequences. In this thesis, methodologies are treated in a broad sense in order to arrive at a generalisable solution. An integrated research framework was constructed to pursue the solution. The framework is based on my adopted ontological, epistemological and methodological assumptions. The research is considered as an interpretivist single case study using qualitative research methods. A holistic Information Security Methodology was selected for in-depth study. Data were collected from various sources, but primarily from focus groups using 18 participants representing 11 organisations. Data were also collected from the developer of the methodology and two other organisations who were implementing it. Data analysis was based on a grounded approach to arrive at a substantive theory representing a conception of an ideal methodology as perceived by these practitioners. The use of the Hermeneutic circle and the purposely constructed Interrogative Framework were the essential tools for analysis. This conception is believed to hold some of the key factors for reducing the common problems of deviation and rejection of methodologies. The proposed theory is the main contribution of this research, which can be used as a foundation theory to construct and evaluate methodologies. The theory also has been used to propose extensions to existing theories. The core theory consists of basic elements and attributes. Other constructs were also developed to be used as contexts to the theory. In totality these findings provide a rich sphere to examine and understand methodologies.
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Qiu, Bin. "Next Generation Information Communication Infrastructure and Case Studies for Future Power Systems." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/27308.
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As the power industry enters the new century, powerful driving forces, uncertainties and new services and functions are compelling electric utilities to make dramatic changes in the way they communicate. Expanding network services such as real time monitoring are also driving the need for more increasing bandwidth in the communication network backbone. These needs will grow further as new remote real-time protection and control applications become more feasible and pervasive. This dissertation addresses two main issues for the future power system information infrastructure: communication network infrastructure and associated power system applications.
Optical network no doubt will become the predominate network for the next generation power system communication. The rapid development of fiber optic network technology poses new challenges in the areas of topology design, network management and real time applications. Based on advanced fiber optic technologies, an all-fiber network was investigated and proposed. The study will cover the system architecture and data exchange protocol aspects.
High bandwidth, robust optical network could provide great opportunities to the power system for better service and efficient operation. In the dissertation, different applications were investigated. One of the typical applications is the SCADA information accessing system. An Internet-based application for the substation automation system will be presented. VLSI (Very Large Scale Integration) technology is also used for one-line diagrams auto-generation. High transition rate and low latency optical network is especially suitable for power system real time control. In the dissertation, a new local area network based Load Shedding Controller (LSC) for isolated power system will be presented. By using PMU and fiber optic network, an AGE (Area Generation Error) based accurate wide area load shedding scheme will also be proposed. The objective is to shed the load in the limited area with minimum disturbance.Ph. D.
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Nicho, Mathew. "Information technology audit systems alignment and effectiveness measures : a thesis submitted to the graduate faculty of design and creative technologies, AUT University in partial fulfilment of the requirements for the degree of Doctor of Philosophy, 2008." Click here to access this resource online, 2008. http://hdl.handle.net/10292/646.
Повний текст джерелаАнотація:
Information technology audit has proven to be a relatively new, less researched and rapidly expanding field among large, medium and even small businesses (commercial and non-commercial organisations). The implementation rate has grown rapidly and presents a huge growth market for audit consultants due to the need for transparency and compliance with regulation (for example: Sarbanes Oxley Act) and the need to be competitive in the marketplace. The audit process is being conducted mainly by consultants following a traditional process but using different proprietary approaches and mostly done manually. The purpose of this study is to present a scientific method to attach a purely measurement focus to the auditing process so as to provide an auditing as well as a quantitative outcome of the performance to the various IS entities that are audited using a novel automated method that can save organisations considerable resources in terms of time, cost and effort. The nature of the topic directed the researcher to three domains of information system (IS) namely studies on IS measurement, IT governance and software engineering. These areas provided information on the nature of IS measurement and the models used; the process of auditing/measurement and the corresponding frameworks used; the principles and methodology of measurement of IS entities; and measurement models used both in the software engineering and information systems domain. The review of the literature gave rise to the research question and the COBIT-GQM (Control Objectives for Information Technology Audit) – Goal Question Metrics) model. The research question that had emerged out of the four propositions “How can an IT audit or governance framework be used to measure the effectiveness of IS entities in a scientific manner using customised and goal oriented metrics” along with the nature of data sought (positivist), guided the researcher to qualitative research using multiple case studies to test the theoretical model (grounded theory) that had emerged out of the literature review. The theoretical model was automated (with a front end interface and a back-end database) and initially tested for usability issues. Then the common COBIT control objective that was obtained through an initial survey was entered into the database along with a set of questions and metrics (developed by the researcher by following the given GQM guidelines). This application that was demonstrated, and given for evaluation in four organisations gave rise to expected and surprising results. While the respondents expressed their desire to incorporate a customised and goal oriented measurement perspective to their IT audit/performance functions, that would save them time, effort and cost, numerous suggestions were provided that need to be incorporated into the model to make it fully functional. Notable among them are the need to embed a multiple contextual qualifying layer, incorporating benchmarking feature to the model, and the need to link this with the maturity model. These were incorporated into the model and a comprehensive model incorporating all the suggestions was created. The qualitative case study method being used here more to evaluate a theory, provided a sound base for future studies to generate hypothesis that can be evaluated using quantitative survey methods for the model to be generalised. IT auditing being a relatively new, less researched, conventional and high growth oriented field, the use of an innovative, comprehensive, automated and scientific method of audit and measurement method will satisfy the implied need for organisations to incorporate the diverse audit/measurement/ control/standards into one comprehensive method and this research is a major step in this direction. Since the new model is comprehensive and can be automated organisations can economise in terms of time, cost and effort. Irrespective of the nature of economic cycle the need for economising in terms of cost, time and effort is universal for all organisations.
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Mainelli, Michael Raymond. "Development of a risk-reward meta-methodology : a study in information systems concepts and applications derived from problems with measurement of strategic planning systems quality." Thesis, London School of Economics and Political Science (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408004.
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Ajegunma, Solomon, Zakaria Abdirahman, and Hassan Raza. "Exploring the governance of IT in SMEs in Småland." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Informatik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-18654.
Повний текст джерелаАнотація:
With many research available on IT governance, this research differs from most of them due to its delimitation. The focus of this research lies in the two domains of value creation and performance measurement. Furthermore, the area of research has been small and medium Enterprises located in the area of Småland, Sweden. Brisebois, Boyd & Shadid (2001) gave us the following definition of IT governance: “How those persons entrusted with governance of an entity will consider IT in their supervision, monitoring, control, and direction of the entity. How IT is applied will have an immense impact on whether the entity will attain its vision, mission, or strategic goal.” An objective of IT governance is to align the IT resources of an enterprise in a way that it fast-tracks the business priorities of the enterprise and assures that the investments in IT generates business value and that the IT is performing to its expectations. The research questions and the outcome of this research paper sheds light on the challenges of both value creation and performance measurement within the SMEs, but it also showcases what the driving forces of IT value creation are and which benefits arise from measuring the IT performance within the SMEs. Through semi-structured interviews with four SMEs, based in the region of Småland, numerous amounts of challenges and driving forces for IT value creation and challenges and benefits to measuring IT performance have been extracted. Based on the extracted information from the interviews, an analysis and a conclusion have been formed by the authors. In the end, the authors provide their thoughts for suggestions for further work and how all of this contributes to the field of Informatics.
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Zelik, Daniel Justin. "On the Measurement and Visualization of Analysis Activity: A Study of Successful Strategies for Web-based Information Analysis." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1345488802.
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Jeong, Ki Tai. "A Common Representation Format for Multimedia Documents." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3336/.
Повний текст джерелаАнотація:
Multimedia documents are composed of multiple file format combinations, such as image and text, image and sound, or image, text and sound. The type of multimedia document determines the form of analysis for knowledge architecture design and retrieval methods. Over the last few decades, theories of text analysis have been proposed and applied effectively. In recent years, theories of image and sound analysis have been proposed to work with text retrieval systems and progressed quickly due in part to rapid progress in computer processing speed. Retrieval of multimedia documents formerly was divided into the categories of image and text, and image and sound. While standard retrieval process begins from text only, methods are developing that allow the retrieval process to be accomplished simultaneously using text and image. Although image processing for feature extraction and text processing for term extractions are well understood, there are no prior methods that can combine these two features into a single data structure. This dissertation will introduce a common representation format for multimedia documents (CRFMD) composed of both images and text. For image and text analysis, two techniques are used: the Lorenz Information Measurement and the Word Code. A new process named Jeong's Transform is demonstrated for extraction of text and image features, combining the two previous measurements to form a single data structure. Finally, this single data measurements to form a single data structure. Finally, this single data structure is analyzed by using multi-dimensional scaling. This allows multimedia objects to be represented on a two-dimensional graph as vectors. The distance between vectors represents the magnitude of the difference between multimedia documents. This study shows that image classification on a given test set is dramatically improved when text features are encoded together with image features. This effect appears to hold true even when the available text is diffused and is not uniform with the image features. This retrieval system works by representing a multimedia document as a single data structure. CRFMD is applicable to other areas of multimedia document retrieval and processing, such as medical image retrieval, World Wide Web searching, and museum collection retrieval.
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Huang, Junyi. "Investigation on landslide susceptibility using remote sensing and GIS methods." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/33.
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Landslides are one of the most destructive disasters that cause damage to both property and life every year. Various methodologies have been reported for landslide susceptibility mapping. Statistical methods are widely used to fit the mathematical relationship between observed landslides and the factors considered to influence the slope failure, and have shown remarkable accuracy. Among these models, frequency ratio and logistic regression models are the most popular for its simplicity and high accuracy. However, virtually all previous studies randomly extracted and reserved a portion of historical landslide records to perform the model evaluation. The purpose of this study are: 1) To produce a landslide susceptibility map for Lantau Island by GIS and remote sensing methods as well as statistical modeling techniques 2) To add extra value to the literature of evaluating their “prediction rate” (rather than “success rate”) for landslide susceptibility mapping in a temporal context. The mountainous terrain, heavy and prolonged rainfall, as well as dense development near steep hillsides make Hong Kong as one of the most vulnerable metropolitans to the risk of landslides. As there is an increasingly high demand for land resource to support the growth of economic and population, regional specific landslide susceptibility assessment in Hong Kong is necessary for hazard management and effective land use planning. Firstly, the spatial relationship among landslide occurrence and nine causative factors (elevation, slope aspect, slope gradient, plan curvature, profile curvature, NDVI, distance to river, SPI and lithology) were explored. The distribution of landslides on Lantau Island is largely governed by a combination of geo-environmental conditions, such as elevation of 200m-300m, slope gradient of 25°-35°, slope aspect of west or northwest, high degree of positive or negative plan curvature and profile curvature, sparse vegetation in terms of NDVI in 0.3-0.5 (shrub/grassland), proximity (0.6-1.2km) to fault line, presence of volcanic bedrocks (especially rhyolite lava and tuff) and high stream power index. Second, landslide susceptibility maps were generated by frequency ratio and logistic regression model, respectively. Validations of the mapping results were performed by calculating relative operating characteristics (ROC). The models, trained by 1,864 (70%) landslides records in the Enhanced Natural Terrain Landslide Inventory (ENTLI) from 2000 to 2008, were validated by subsequent 799 (30%) landslide occurred from 2008 to 2009. The validation result shows that logistic regression model (88.70%) possesses a better prediction power than frequency ratio model (78.00%) for the study area. The findings suggested that logistic regression analysis is more reliable for landslide susceptibility mapping. The resultant maps are expected to provide a scientific assessment of the risk areas with respect to landslides on Lantau Island, and to serve as a basis for decisions or justification of the Lantau development planning. Keywords: landslide susceptibility; frequency ratio; logistic regression; temporal verification; GIS; Hong Kong
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Wirth, Gilson Inacio. "SGC : um ambiente para a automação de procedimentos de caracterização e teste." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1994. http://hdl.handle.net/10183/25465.
Повний текст джерелаАнотація:
Este trabalho trata de ambientes de software para a realização de teste e caracterização de dispositivos, componentes ou circuitos eletro-eletrônicos, de forma automatizada. Ênfase especial é dada à problemática relacionada ao teste e caracterização automatizados de dispositivos e circuitos integrados. O assunto é tratado sob dois pontos de vista distintos e complementares: i) Sob o ponto de vista do engenheiro de teste e caracterização, que realiza experimentos físicos, que são as medidas e aquisições de dados, processa, visualiza e analisa dados. ii) Sob o ponto de vista do projetista de ferramentas de software, que desenvolve programas de computador para automatizar as tarefas rotineiramente realizadas durante o teste e a caracterização. Após a analise do assunto em questão, um ambiente de software (Framework), chamado SGC, é proposto e implementado. O SGC foi implementado em ambiente MS-WindowsTM através de um paradigma de orientação a objetos, e pretende atender as necessidades inerentes ao teste e caracterização automatizados, quando tratados sob os dois pontos de vista citados. O ambiente SGC é um sistema aberto, a fim de permitir o fácil acoplamento de novas facilidades, bem como mostra-se um sistema prático para suportar rotinas de teste e caracterização em laboratório.This work deals with software environments for automatic test and characterization of electro-electronical devices, components and circuits. Special attention is paid to the features of testing and characterizing integrated devices and circuits. The subject is treated in two different and complementary views: i) The needs of the test and characterization engineer are addressed. The test engineer carries out physical experiments, which embody measurements and data acquisitions, data processing, visualization and analysis. ii) The needs of the software tools developer, who develops computer programs for the automation of the procedures that are usually carried out during test and characterization, are also addressed. After the analysis of the subject under study, a software framework, called SGC ("Sistema de Gerenciamento e Controle"), is proposed and implemented. The SGC Framework was implemented under MS-WindowsTm using a object oriented approach. The SGC framework aims to fulfill the needs inherent to the automatic test and characterization, when treated using the approaches mentioned above. The SGC Framework is a open system, supporting the easy integration of new software functions to the environment, as well as a practical system for test and characterization laboratory routines.
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Heilmann, Jonas. "Application Security Review Criteria for DevSecOps Processes." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79305.
Повний текст джерелаАнотація:
For several years a trend in agile software development methodologies that connect the development with operations is transforming business activities in the industry. This methodology, that breaks down the formerly separated silos of development and operations is commonly referred to as DevOps. From a security point of view, however, the DevOps methodology lacks a fundamental integration of security in any of its phases. As a result of that, the DevSecOps practice, that intertwines the disciplines of security, development and operations is more and more gaining popularity. The biggest challenge in this shift of practice is the flawless introduction of security methods into existing DevOps processes without disturbing the fast pace and responsiveness of those. Whereas the security integration and processes on how to make DevOps secure are discussed in various preceding studies, this research focuses on an investigation of criteria that can be used to measure application security in DevSecOps integration. Given the lack of a fundamental base of academic literature on the topic, a Multivocal Literature Review (MLR) was conducted. For the study, not only academic research but also gray literature such as blogs and articles from industry practitioners were investigated to extract meaningful review criteria. As applicable, high-level criteria, agreed-upon best-practices and descriptions of security controls were thereby examined and compiled out of the studied literature. The criteria resulting from the conducted MLR process were further analyzed with each criterion's coverage in existing security standards in mind. Additionally, an investigation of a criterion's connection to the fundamental principles of the DevOps methodology was performed. The resulting list of criteria as well as additional, partially classified sub-criteria are presented as the primary contribution of the thesis. Further, a discussion of the results and evaluation of the criteria for measurability and applicability with the help of an expert group from the cooperating company Veriscan Security AB was performed. Lastly, the conducted study highlights the current state of research on the topic, discusses the lack of knowledge for particular areas as well as serves as a foundation and suggestion for several fields of future research. The criteria could, for instance, enable future design science research on DevSecOps security measurement.
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Fan, Haiyan. "Web personalization - a typology, instrument, and a test of a predictive model." Thesis, [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1581.
Повний текст джерела
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Thorpe, John Paul. "Modeling marine environmental impacts in Hong Kong with GIS." Thesis, Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17456952.
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Singh, Rajput Shivaram. "Increasing efficiency in ECU function development for Battery Management Systems." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-206088.
Повний текст джерелаАнотація:
In the context of automotive industries today, the focus of ECU function development is always on finding the best possible combinations of control algorithms and parameter. The complex algorithms with broad implementation range requires optimal calibration of ECU parameters to achieve the desired behaviour during the drive cycle of the vehicle. With the growing function complexity of automotive E/E Systems, the traditional approaches of designing the automotive embedded systems are not suitable. In order to overcome the challenge of complexity, many of the leading automotive companies have formed a partnership in order to develop and establish an open industry standard for automotive E/E architecture called AUTOSAR. In this thesis, toolchain for ECU function development following AUTOSAR standard and an efficient measurement and calibration mechanism using XCP on CAN will be investigated and implemented. Two toolchains will be proposed in this thesis, describing their usage in different stages of ECU function development and in calibration. Both these toolchains will be tested to prove its working.I området utveckling av funktionalitet på elektroniska styrsystem inom bilindustrin idag, ligger fokus på att finna den bästa kombinationen av reglermetoder och styrparametrar. Dessa avancerade system, med breda användningsområden, kräver bästa möjliga injustering av dess kalibrerbara parametrar, för att nå önskat beteende vid användning av fordonet. Det ökande omfånget av funktionskraven på styrsystemen, innebär att sedvanlig metodik för utveckling av dessa system inte är lämplig. För att kunna lösa dessa svårigheter, har de stora inom bilindustrin ingått ett samarbete, där de tillsammans skapat och utvecklar en industristandard för funktionsoch systemutveckling av styrsystem. Standarden kallas AUTOSAR. Denna rapport beskriver hur en kedja av utvecklingsverktyg som följer AUTOSAR-standarden kan användas, för att undersöka och använda en metod för systemövervakning och parameterkalibrering, genom användning av XCP över CAN.
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Li, Weiping. "A subsurface water quality evaluation system for assessing NPS pollution potential by pesticides." Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40028.
Повний текст джерелаАнотація:
A watershed scale water quality evaluation system was developed for assessing spatial variation of subsurface pesticide movement. The system consists of a linked-transport model component for performing simulation and a GIS component for processing spatially-related data. The surface heterogeneity caused by agricultural activities, topographic, hydrologic, and soil type variations in a watershed was handled by partitioning the watershed into homogeneous subfields. The subsurface soil profile and aquifer heterogeneities were considered by dividing the subsurface domain into root zone, intermediate vadose zone, and saturated zone, respectively. On each of the homogeneous subfields, the physically-based models, PRZM and VADOFT, were linked to simulate pesticide transport in the root and intermediated vadose zones. Pesticide movement in groundwater underneath the watershed was simulated by linking the other two models with SUTRA. An irregular shape finite element mesh generator was developed for fitting the irregular shape watershed boundary and reducing the number of nodes of the finite element mesh. Either transient or steady state flow and transport simulation could be performed with the system. The system is able quantitatively to produce detailed spatial variation maps of pesticide concentrations at any desired depth in the unsaturated zone and in groundwater.
The system requires spatially-distributed information as inputs. Management of large volumes of spatially-referenced data which represent the heterogeneous properties of the watershed were facilitated by a developed GIS component. The GIS data processing component was composed of spatial data manipulation and display, attribute database management, and model input information extraction subcomponents. The spatial data processing component consists of data format conversion, map registering, map editing, new information generation, and map display subcomponents.Ph. D.
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Rahayem, Mohamed. "Planar segmentation for Geometric Reverse Engineering using data from a laser profile scanner mounted on an industrial robot." Licentiate thesis, Örebro University, Department of Technology, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-2318.
Повний текст джерелаАнотація:
Laser scanners in combination with devices for accurate orientation like Coordinate Measuring Machines (CMM) are often used in Geometric Reverse Engineering (GRE) to measure point data. The industrial robot as a device for orientation has relatively low accuracy but the advantage of being numerically controlled, fast, flexible, rather cheap and compatible with industrial environments. It is therefore of interest to investigate if it can be used in this application.
This thesis will describe a measuring system consisting of a laser profile scanner mounted on an industrial robot with a turntable. It will also give an introduction to Geometric Reverse Engineering (GRE) and describe an automatic GRE process using this measuring system. The thesis also presents a detailed accuracy analysis supported by experiments that show how 2D profile data can be used to achieve a higher accuracy than the basic accuracy of the robot. The core topic of the thesis is the investigation of a new technique for planar segmentation. The new method is implemented in the GRE system and compared with an implementation of a more traditional method.
Results from practical experiments show that the new method is much faster while equally accurate or better.
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Geyer, Rian Willem. "Value-adding business process modelling : determining the suitability of a business process modelling technique for a given application." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85758.
Повний текст джерелаАнотація:
Thesis (MScEng)-- Stellenbosch University, 2013.ENGLISH ABSTRACT: Organizations formally define and document their business processes in order to properly understand them and to subsequently enable their continuous development, improvement and management. In order to formally define and document their business processes, organizations can use Business Process Modelling, which represents the design of graphical models that portray the business processes of organizations. It is however noted that it is difficult to select a suitable Business Process Modelling Technique in support of a specific application of Business Process Modelling. This is due to the considerable amount of existing Business Process Modelling Techniques, the inherent impact of their varying capabilities and the lack of formal measures that are available to support evaluations regarding their suitability for specific modelling applications. It is therefore considered appropriate to execute a research study that is aimed at the development and validation of a measurement framework that can be used to evaluate the suitability of Business Process Modelling Techniques for specific modelling applications.
AFRIKAANSE OPSOMMING: Organisasies definieer en dokumenteer hulle besigheidsprosesse op ʼn formele wyse om hulle ordentlik te verstaan en gevolglik hulle deurlopende ontwikkeling, verbetering en bestuur te bemagtig. Ten einde die uitvoering van hierdie aktiwiteit aan te spreek, kan organisasies Besigheidsproses Modellering gebruik om grafiese modelle van hulle besigheidsprosesse te ontwerp. Daar word egter kennis geneem dat dit moeilik is om ʼn geskikte Besigheidsproses Modellering Tegniek te kies tes ondersteuning van ʼn spesifieke toepassing van Besigheidsproses Modellering. Dit is weens die groot hoeveelheid bestaande Besigheidsproses Modellering Tegnieke, die impak van hulle variërende vermoëns asook die gebrek aan formele maatstawwe wat gebruik kan word om hulle geskiktheid vir spesifieke modellering toepassings te evalueer. Dit lei tot die besluit om ‘n studie te voltooi wat gefokus is op die ontwikkeling en validasie van ʼn metings raamwerk wat gebruik kan word om die geskiktheid van Besigheidsproses Modellering Tegnieke vir spesifieke toepassings van Besigheidproses Modellering te evalueer.
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Rezaei, Hengameh. "Models complexity measurement." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-68701.
Повний текст джерелаАнотація:
The demand for measuring the quality aspects and need for higher maintainability and understandability of the models are increasing within the field of software engineering and management. Among these, complex models are of special interest for designers as they are more correlated to the eventual reliability of the system and therefore are considered very important. This study presents a method for measuring the complexity of existing software models in Ericsson seeking to raise the maintainability and understandability of the software engineering project in progress. A literature survey was performed in order to find a list of all potentially useful metrics. Narrowing down the long list of metrics was carried out by interviews with designers at Ericsson. Utilizing statistical data analysis based on interviews results was the next step. Beside, workshops were used for evaluating the reliability of preliminary data analysis and an empirical formula was generated for models’ complexity prediction. Metrics such as “non-self-transitions”, “transitions per states”, and “state depth” are the most important for calculating the models’ complexity score (rank) and for these metrics threshold values were set. Challenges and experiences gained in this study demonstrated the importance of incorporating user generated feedback in the empirical complexity modeling studies
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Buswell, Richard A. "Uncertainty in the first principle model based condition monitoring of HVAC systems." Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/7559.
Повний текст джерелаАнотація:
Model based techniques for automated condition monitoring of HVAC systems have been under development for some years. Results from the application of these methods to systems installed in real buildings have highlighted robustness and sensitivity issues. The generation of false alarms has been identified as a principal factor affecting the potential usefulness of condition monitoring in HVAC applications. The robustness issue is a direct result of the uncertain measurements and the lack of experimental control that axe characteristic of HVAC systems. This thesis investigates the uncertainties associated with implementing a condition monitoring scheme based on simple first principles models in HVAC subsystems installed in real buildings. The uncertainties present in typical HVAC control system measurements are evaluated. A sensor validation methodology is developed and applied to a cooling coil subsystem installed in a real building. The uncertainty in steady-state analysis based on transient data is investigated. The uncertainties in the simplifications and assumptions associated with the derivation of simple first principles based models of heat-exchangers are established. A subsystem model is developed and calibrated to the test system. The relationship between the uncertainties in the calibration data and the parameter estimates are investigated. The uncertainties from all sources are evaluated and used to generate a robust indication of the subsystem condition. The sensitivity and robustness of the scheme is analysed based on faults implemented in the test system during summer, winter and spring conditions.
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Javadi, Mohammad Saleh. "Computer Vision Algorithms for Intelligent Transportation Systems Applications." Licentiate thesis, Blekinge Tekniska Högskola, Institutionen för matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17166.
Повний текст джерелаАнотація:
In recent years, Intelligent Transportation Systems (ITS) have emerged as an efficient way of enhancing traffic flow, safety and management. These goals are realized by combining various technologies and analyzing the acquired data from vehicles and roadways. Among all ITS technologies, computer vision solutions have the advantages of high flexibility, easy maintenance and high price-performance ratio that make them very popular for transportation surveillance systems. However, computer vision solutions are demanding and challenging due to computational complexity, reliability, efficiency and accuracy among other aspects. In this thesis, three transportation surveillance systems based on computer vision are presented. These systems are able to interpret the image data and extract the information about the presence, speed and class of vehicles, respectively. The image data in these proposed systems are acquired using Unmanned Aerial Vehicle (UAV) as a non-stationary source and roadside camera as a stationary source. The goal of these works is to enhance the general performance of accuracy and robustness of the systems with variant illumination and traffic conditions. This is a compilation thesis in systems engineering consisting of three parts. The red thread through each part is a transportation surveillance system. The first part presents a change detection system using aerial images of a cargo port. The extracted information shows how the space is utilized at various times aiming for further management and development of the port. The proposed solution can be used at different viewpoints and illumination levels e.g. at sunset. The method is able to transform the images taken from different viewpoints and match them together. Thereafter, it detects discrepancies between the images using a proposed adaptive local threshold. In the second part, a video-based vehicle's speed estimation system is presented. The measured speeds are essential information for law enforcement and they also provide an estimation of traffic flow at certain points on the road. The system employs several intrusion lines to extract the movement pattern of each vehicle (non-equidistant sampling) as an input feature to the proposed analytical model. In addition, other parameters such as camera sampling rate and distances between intrusion lines are also taken into account to address the uncertainty in the measurements and to obtain the probability density function of the vehicle's speed. In the third part, a vehicle classification system is provided to categorize vehicles into \private car", \light trailer", \lorry or bus" and \heavy trailer". This information can be used by authorities for surveillance and development of the roads. The proposed system consists of multiple fuzzy c-means clusterings using input features of length, width and speed of each vehicle. The system has been constructed by using prior knowledge of traffic regulations regarding each class of vehicle in order to enhance the classification performance.
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Bommakanti, Hemanth Ram Kartik. "Impact of Time Synchronization Accuracy in Integrated Navigation Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260239.
Повний текст джерелаАнотація:
Global Navigation Satellite System/Inertial Measurement Unit (GNSS/IMU) Integrated Navigation Systems (INS) integrate the positive features of GNSS and IMU for optimal navigation guidance in high accuracy outdoor navigation systems, for example using Extended Kalman Filter (EKF) techniques. Time synchronization of IMU data with precise GNSS based time is necessary to accurately synchronize the two systems. This must be done in real-time for time sensitive navigation applications such as autonomous vehicles. The research is done in two parts. The first part is the simulation of inaccurate time-stamping in a single axis of nonlinear input data in a gyroscope and an accelerometer, to obtain the timing error value that is tolerable by a high accuracy GNSS/INS system. The second part is the creation of a real-time algorithm using an STM32 embedded system enabled with FreeRTOS real-time kernel for a GNSS receiver and antenna, along with an IMU sensor. A comparative analysis of the time synchronized system and an unsynchronized system is done based on the errors produced using gyroscope and accelerometer readings along a single axis from the IMU sensor, by conducting static and rotational tests on a revolving chair.The simulation concludes that a high accuracy GNSS/INS system can tolerate a timing error of up to 1 millisecond. The real-time solution provides IMU data paired with updated GNSS based time-stamps every 5 milliseconds. The timing jitter is reduced to a range of ±1 millisecond. Analysis of final angular rotation error and final position error from gyroscope and accelerometer readings respectively, indicate that the real-time algorithm produces a reduction in errors when the system is static, but there is no statistical evidence showing the reduction of errors from the results of the rotational tests.GNSS / IMU integrerade navigationssystem kombinerar de positiva egenskaperna hos GNSS och IMU för optimal prestanda i noggranna navigationssystem. Detta görs med hjälp av sensorfusion, till exempel EKF. Tidssynkronisering av IMU-data med exakt GNSS-baserad tid är nödvändigt för att noggrant synkronisera de två systemen. Detta måste göras i realtid för tidskänsliga navigationsapplikationer såsom autonoma fordon. Forskningen görs i två delar. Den första delen är simulering av icke-linjär rörelse i en axel med felaktig tidsstämpling hos ett gyroskop och en accelerometer. Detta görs för att erhålla det högsta tidsfel som är acceptabelt hos ett GNSS / INS-system med hög noggrannhet. Den andra delen är skapandet av en realtidsalgoritm med ett inbyggt STM32-system med FreeRTOS som realtidskärna för en GNSSmottagare och antenn, tillsammans med en IMU-sensor. En jämförande analys av det tidssynkroniserade systemet mot ett osynkroniserat system görs baserat på de positionsfel längs en axel som produceras av gyroskopoch accelerometermätningar. Detta görs genom att utföra statiska och roterande tester med hjälp av en roterande stol.Simuleringen visar att ett noggrant GNSS / INS-system tolererar ett tidsfel på upp till 1 millisekund. Realtidslösningen ger IMU-data med tidsstämplar synkroniserade med GNSS-tid var femte millisekund. Tidsjittret reduceras till ett intervall mellan ± 1 millisekund. Analysen av det slutliga vinkelrotationsfelet och positionsfelet från gyroskopoch accelerometermätningar indikerar att realtidsalgoritmen ger ett lägre fel när systemet är statiskt. Det finns dock inga statistiska bevis för förbättringen från resultaten av rotationstesterna.
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Wong, James C. "Use of the general transit feed specification (GTFS) in transit performance measurement." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50341.
Повний текст джерелаАнотація:
Until recently, transit data lacked a common data format that could be used to share and integrate information among multiple agencies. In 2005, however, Google worked with Tri-Met in Oregon to create the General Transit Feed Specification (GTFS), an open data format now used by all transit agencies that participate in Google Maps. GTFS feeds contain data for scheduled transit service including stop and route locations, schedules and fare information. The broad adoption of GTFS by transit agencies has made it a de facto standard. Those agencies using it are able to participate in a host of traveler services designed for GTFS, most notably transit trip planners. Still, analysts have not widely used GTFS as a data source for transit planning because of the newness of the technology. The objectives of this project are to demonstrate that GTFS feeds are an efficient data source for calculating key transit service metrics and to evaluate the validity of GTFS feeds as a data source. To demonstrate GTFS feeds’ analytic potential, the author created a tool called GTFS Reader, which imports GTFS feeds into a database using open-source products. GTFS Reader also includes a series of queries that calculate metrics like headways, route lengths and stop-spacing. To evaluate the validity of GTFS feeds, annual vehicle revenue miles and hours from the National Transit Database (NTD) are compared to the calculated values from agencies whose GTFS feeds are available. The key finding of this work is that well-formed GTFS feeds are an accurate representation of transit networks and that the method of aggregation presented in this research can be used to effectively and efficiently calculate metrics for transit agencies. The daily aggregation method is more accurate than the weekly aggregation method, both introduced in this thesis, but practical limitations on processing time favor the weekly method. The reliability of GTFS feed data for smaller agencies is less conclusive than that of larger agencies because of discrepancies found in smaller agencies when their GTFS-generated metrics were compared to those in the NTD. This research will be of particular interest to transit and policy analysts, researchers and transit planners.
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Eriksson, Oscar, and Lars Beck-Friis. "Kontinuitet i vården : Framtagandet av en metod för kontinuerlig mätning av kontinuitet på sjukvårdsmottagningar." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-260702.
Повний текст джерелаАнотація:
Good continuity of care is considered desirable and is often referred to as an essential component in creating a more patient-centered health care. However, what is meant by continuity of care is not entirely self-evident and there are different ways to quantify and address it. The purpose of this study is to introduce a method for continuous measurement of continuity, where visits between patients and physicians in various care clinics are of interest. Five established measurements (indices) of continuity of care were evaluated; MFPC, K, COC, MCI and SECON. Calculations on these indices were made using hospital visits-related data from January 2011 to April 2015, where a time window of 1.5 years was used when calculating index values. The results from the calculations show a high correlation between all indices when calculated on an average of all patients at a clinic. Based on this, properties such as intuitive interpretation and simple calculations made MFPC-index this study’s single choice of index. It can be used to examine the change of a clinic’s patient’s continuity over time. The index also allows to assign a value to a physician, showing how much continuity that doctor contributes to all its patients. A tool was also developed to visualises how many visits each patient has had with how many different doctors at a clinic. This tool allows the identification of individual patients whose continuity can be seen as undesired. These three components of the method for continuous measurement of continuity can be seen as representations of continuity from a system’s, physician’s and patient’s perspective.
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Amiri, Javad Mohammadian, and Venkata Vinod Kumar Padmanabhuni. "A Comprehensive Evaluation of Conversion Approaches for Different Function Points." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3691.
Повний текст джерелаАнотація:
Context: Software cost and effort estimation are important activities for planning and estimation of software projects. One major player for cost and effort estimation is functional size of software which can be measured in variety of methods. Having several methods for measuring one entity, converting outputs of these methods becomes important. Objectives: In this study we investigate different techniques that have been proposed for conversion between different Functional Size Measurement (FSM) techniques. We addressed conceptual similarities and differences between methods, empirical approaches proposed for conversion, evaluation of the proposed approaches and improvement opportunities that are available for current approaches. Finally, we proposed a new conversion model based on accumulated data. Methods: We conducted a systematic literature review for investigating the similarities and differences between FSM methods and proposed approaches for conversion. We also identified some improvement opportunities for the current conversion approaches. Sources for articles were IEEE Xplore, Engineering Village, Science Direct, ISI, and Scopus. We also performed snowball sampling to decrease chance of missing any relevant papers. We also evaluated the existing models for conversion after merging the data from publicly available datasets. By bringing suggestions for improvement, we developed a new model and then validated it. Results: Conceptual similarities and differences between methods are presented along with all methods and models that exist for conversion between different FSM methods. We also came with three major contributions for existing empirical methods; for one existing method (piecewise linear regression) we used a systematic and rigorous way of finding discontinuity point. We also evaluated several existing models to test their reliability based on a merged dataset, and finally we accumulated all data from literature in order to find the nature of relation between IFPUG and COSMIC using LOESS regression technique. Conclusions: We concluded that many concepts used by different FSM methods are common which enable conversion. In addition statistical results show that the proposed approach to enhance piecewise linear regression model slightly increases model’s test results. Even this small improvement can affect projects’ cost largely. Results of evaluation of models show that it is not possible to say which method can predict unseen data better than others and it depends on the concerns of practitioner that which model should be used. And finally accumulated data confirms that empirical relation between IFPUG and COSMIC is not linear and can be presented by two separate lines better than other models. Also we noted that unlike COSMIC manual’s claim that discontinuity point should be around 200 FP, in merged dataset discontinuity point is around 300 to 400. Finally we proposed a new conversion approach using systematic approach and piecewise linear regression. By testing on new data, this model shows improvement in MMRE and Pred(25).Javad Amiri: Nabshe Kooche 3, Bolvare shadi, Farhangian 2, Qom, Iran, phone: +989127476593 Vinod Kumar: s/o P.V.Kondala Rao, Main Road Khaji Street Rajahmundry. A.P. India pin: 533101 phone: +917396449336
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Feyh, Markus. "Lean software development measures : A systematic mapping." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5537.
Повний текст джерелаАнотація:
Context. Process improvement using lean software development uses measures to answer information needs. Measures are important in process improvement as they identify whether improvements have been made or further improvements are needed. Objectives. This study aims to identify the measures proposed in literature for lean software development and structure them according to ISO/IEC 15939. Methods. The research methodology consists of systematic mapping and uses thematic analysis. Results. Lean software development literature has become more frequently published from 1996 to 2013. The most common research types were evaluation research and experience reports. Themes were identified in measures resulting in the identification of 22 base measures, 13 derived measures and 14 indicators in total. Identified measures were then structured using a proposed meta-model adapted from ISO/IEC 15939. Using the proposed meta-model twelve models of measures were instantiated. Conclusions. Gaps exist in the lean principles for deferring commitment and respecting people. Structuring measures in models presents opportunities to identify shared dependencies in measures. Lean software development research guidelines were defined. Further research into the comparison of indicators, the industrial use of measures and the representation of models of measures is needed.
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Bennich-Björkman, Oscar. "A comprehensive summary and categorization of physical quantity libraries." Thesis, Uppsala universitet, Informationssystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353817.
Повний текст джерелаАнотація:
In scientific applications, physical quantities and units of measurement are used regularly. If the inherent incompatibility between these different units is not handled properly it can lead to major, and sometimes catastrophic, problems. Although the risk of a miscalculation is high and the cost equally so, almost no programming languages has support for physical quantities. Instead developers often rely on external libraries to help them spot these mistakes or prevent them all together. There are several hundred of these types of libraries, spread across multiple sites and with no simple way to get an overview. No one has summarized what has and has not been achieved so far in the area leading to many developers trying to ‘reinvent the wheel’ instead of building on what has already been done. This shows a clear need for this type of research. Employing a systematic approach to look through and analyze all available physical quantity libraries, the search results were condensed into 82 libraries which are presented in this thesis. These are the most comprehensive and well-developed, open-source libraries, chosen from approximately 3700 search results across seven repository hosting sites. In this group, 30 different programming languages are represented. The goal is for the results of this thesis to contribute to a shared foundation on which to build future libraries as well as provide an easy way of spreading knowledge about which libraries exist in the area, thus making it easier for more people to use them.
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Sedera, Darshana. "Enterprise systems success: a measurement model." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16269/.
Повний текст джерелаАнотація:
Organizations make large investments in Information Systems (IS) expecting positive impacts to the organisation and its functions. Yet, there exists much controversy surrounding the 'potential' impacts of these systems, with some studies reporting broadly positive impacts of IS across organizations (Barua, Kriebel and Mukhopadhyay 1995; Barua and Lee 1997; Brynjolfsson and Hitt 1996; Lehr and Lichtenberg 1999; Mukherjee, Ray and Miller 2001), while others have shown nil or detrimental impacts (Attewell and Rule 1984; Brynjolfsson and Yang 1996; Cameron and Quinn 1988; Wilson 1993). Various authors have suggested that these conflicting results may be due to poor measurement - E.g. incomplete or inappropriate measures of success (DeLone and McLean 1992; Gable 1996; Melone 1990), lack of theoretical grounding and hence agreement on appropriate measures of success (Bonner 1995; Myers, Kappelman and Prybutok 1998), myopic focus on financial performance indicators (Ballantine, Bonner, Levy, Martin, Munro and Powell 1996; Kaplan and Norton 1996), weaknesses in survey instruments employed (Gable, Sedera and Chan 2003) (e.g., constructs lacking in validity), or (5) inappropriate data collection approach (Seddon, Staples, Patnayakuni and Bowtell 1999; Sedera and Gable 2004) (e.g., asking the wrong people, unrepresentative sample). Enterprise Systems (ES) have over the past decade emerged to be one of the most important developments in the corporate use of information technology. Anecdotal evidence reveals discontent with these large application software packages. Yet Enterprise System investments are seldom systematically evaluated post-implementation; the review process and measures typically being idiosyncratic and lacking credibility. Impacts resulting from 'Enterprise Systems' are particularly difficult to measure, with an Enterprise System entailing many users ranging from top executives to data entry operators; many applications that span the organization; and a diversity of capabilities and functionality. Despite the substantial investments made by organizations and the anecdotal evidence of discontent, systematic attempts to measure their success have been few. The primary objective of this research is to develop and test a standardized instrument for measuring ES-Success. Other related objectives of this research include: (1) to identify the dimensions and measures of ES-Success, (2) to validate a maximally generalizable measurement model and survey instrument for gauging ES-Success; (3) to develop an understanding of the state of Enterprise Systems using descriptive/comparative statistics, and (4) to identify and test an antecedent of ES-Success. With the above objectives, and in attention to the weaknesses identified in past IS-success research, this study follows and extends the 'research cycle' guidelines of Mackenzie and House (1979) and McGrath (1979). The research cycle entails two main phases: (1) an exploratory phase to develop the hypothesized measurement model, and (2) a confirmatory phase, to test the hypothesized measurement model against new data. The two surveys (termed as identification-survey and specification-survey) conducted in the exploratory phase of this research go beyond the activities recommended by Mackenzie and House (1979) and McGrath (1979). A third "confirmation-survey" was completed in the confirmatory phase of the research cycle. The three surveys gathered and analyzed data from six hundred (600) respondents. The purpose of the identification-survey was to discover the salient ES-Success dimensions and measures to include in an a-priori ES-Success model. Data from 137 respondents representing 27 Australian State Government Agencies that had implemented SAP R/3 in the late 1990s were analyzed. The analysis of identification-survey data yielded an a-priori model with 41 measures of 5 dimensions of ES-Success that provide a holistic view across the organization from strategic to operational levels. The specification-survey was employed to validate the a-priori ES-Success measurement model derived in the preceding identification-survey. Employing 310 responses from the same 27 public sector organizations, exploratory data analysis validated 27 measures of success pertaining to the 4 dimensions: information quality, system quality, individual impact and organizational impact. Data for testing the influence of an antecedent of ES-Success was simultaneously gathered during the specification-survey. This analysis, based on the Adaptive Structuration Theory (AST), investigated the influence of Knowledge Management Structures Adequacy (KMSA) on ES-Success. Preliminary results indicate a strong relationship between the Knowledge Management Structures Adequacy and ES-Success. The purpose of the confirmation-survey was to further validate the dimensions and measures of the ES-Success model, using new data, employing confirmatory statistical techniques. Data was gathered from 153 respondents across a large University that had implemented the Oracle Enterprise System, which facilitated further construct validity of the ES-Success measurement instrument was further established using Structural Equation Modeling (SEM).
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Lindgren, Tore. "Characterization problems in radio measurement systems." Doctoral thesis, Luleå : Department of Computer Science and Electrical Engineering, Luleå University of Technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3373091.
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Cherednichenko, O. Yu, Yu Gontar, and A. Matveyev. "Towards monitoring and evaluation information system development." Thesis, NTU "KhPI", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38250.
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Fouche, Ilse. "Assessing the use of GIS in the poverty alleviation strategy of the West Coast District Municipality." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/21657.
Повний текст джерелаАнотація:
Thesis (MA)--University of Stellenbosch, 2007.ENGLISH ABSTRACT: Poverty is a complex issue and has many causes which are wide-ranging with devastating effects. In order for these effects of poverty to be minimilised and contained, a poverty alleviation strategy has to be implemented in an effective and efficient manner. In order for a poverty alleviation strategy to be effective for the main stakeholders in the decision-making process the various components of poverty have to be fully comprehended. The extent of poverty needs to be determined by employing poverty measurement techniques which will enable the decision-maker to use a (GIS) to store the poverty data. This Geographical Information System (GIS) enables the decision-makers to capture, manage, store and analyse the poverty data. The GIS can be used to map poverty data and allow a visual display of the poverty data to indicate where the greatest needs are and to allow that the relevant stakeholders and policy makers focus scarce resources and efforts to these areas. Therefore poverty mapping can greatly assist government with the implementation process of the policy process specifically in the West Coast region, where a Poverty Alleviation Strategy is currently being implemented. This implementation plan of the West Coast Poverty Alleviation Strategy can be much more effective if used in conjunction with a GIS for poverty mapping. Therefore decision-makers in the West Coast District Municipality will be provided with an opportunity to utilise the poverty data in a more effective manner which will improve their decision-making process thorough the assistance of a decision-support tool such as the visual display of poverty in the West Coast region.
AFRIKAANSE OPSOMMING: Die toestand van armoede is ingewikkeld en kompleks. Armoede het verskeie negatiewe nagevolge. Om hierdie negatiewe nagevolge te bekamp, moet ʼn armoedeverligting strategie in ʼn effektiewe manier geïmplementeer word. Die armoedeverligting strategie kan net vir die hoof rolspelers effektief wees tydens die besluitnemings proses, as die hoof oorsake van armoede in volle konteks beskryf en verstaan word. Die toestand van armoede kan net bepaal word deur om gebruik te maak van verskei armoede meetings tegnieke. Hierdie tegnieke sal die besluitnemer in staat stel om ʼn Geografiese Inligtings Stelsel (GIS) te kan gebruik wat die armoede data kan stoor. GIS kan gebruik word om die toestand van armoede visueel te illustreer. Deur gebruik te maak van ʼn kaart om aan te wys waar die grootste behoefte is i.t.v. die armoede data en waar die rolspelers hulle hulpbronne en kragte moet saamsnoer. Armoede kartering kan daarom ʼn geweldige hulp verleen aan die Owerhede. Veral i.t.v. die beleid implementerings proses in die Weskus Armoedeverligting Strategie, wat ʼn sleutel armoede verligting aksie plan bevat. Die beleid proses sal net verbeter word, deur vir die besluitnemers in die Weskus Distrik Munisipaliteit ʼn geleentheid te skep om die armoede data in ʼn alternatiewe manier te gebruik. Armoede kartering is so alternatiewe manier en sal deur ʼn besluitneming ondersteunings sisteem soos GIS die algehele besluitnemings proses in die Weskus streek verbeter.
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Ziemerink, Johanna Elizabeth Emmarentia. "Die toepassing van bedryfs- en bestuursrekeningkunde vir die ontwikkeling van kleinsakeondernemings in Suid-Afrika / J.E.E. Ziemerink." Thesis, North-West University, 2008. http://hdl.handle.net/10394/2340.
Повний текст джерелаАнотація:
For several years, the number of South Africans starting new business enterprises, has declined. According to the findings of the Global Entrepreneurship Monitor, in 2003, South Africa ranked 22nd out of 31 countries for new entrepreneurial activities. One of the greatest challenges for South Africa, is to find a solution for its huge unemployment problem, which is responsible for many of South Africa's other problems, like poverty, crime and brutality, which discourage global investment in South Africa. The development of small-, medium-, and microenterprises
(SMMEs) is seen as an important ingredient of economic development. The population for this study is therefore comprised of SMMEs in South Africa. Any enterprise is dependent on the environment it operates in. The environment consists of the macro-environment, which includes the demographic, technological, economical, social, institutional and international environment, the market environment, which includes consumers, suppliers and competitors, as well as the micro-environment, which includes the organisation, its mission, goals and objectives, management functions, business functions and business resources. The objective of this study is to investigate the possibility of applying cost- and management accounting methods and techniques for the development and profitable running of SMMEs. These include choosing an appropriate costing system, implementing a management information system, effectively executing the management functions of planning, organising, coordination and control, through the application of cost- and management accounting methods and techniques, including forecasting, budgeting, accurate and appropriate costing methods, performance management techniques like total quality management, benchmarking etcetera. Data on the current use of cost-and management accounting by SMMEs in South Africa, and the performance of these concerns, were collected by means of a structured questionnaire from a sample of 37 SMMEs. It was found, that although several cost- and management accounting methods and techniques are used by some SMMEs, many are not used effectively, while many SMMEs are not aware of the many advantages that the application of these methods and techniques hold. It is recommended that entrepreneurs make an effort to gain the knowledge needed for them to apply the cost- and management accounting methods and techniques that will improve the performance of their businesses, ensuring the attainment of their goals and objectives, ensuring their survival and prosperity, and leading to job creation, economic growth, and the prosperity of the people of South Africa. To assist with this, the researcher has developed a model and a manual that can be used by entrepreneurs to assist them in starting a new enterprise, as well as running a successful enterprise.Thesis (Ph.D. (Business and Management Accounting))--North-West University, Vaal Triangle Campus, 2009.
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Rossi, Pablo Hernan, and pablo@cs rmit edu au. "Software design measures for distributed enterprise Information systems." RMIT University. Computer Science and Information Technology, 2004. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081211.164307.
Повний текст джерелаАнотація:
Enterprise information systems are increasingly being developed as distributed information systems. Quality attributes of distributed information systems, as in the centralised case, should be evaluated as early and as accurately as possible in the software engineering process. In particular, software measures associated with quality attributes of such systems should consider the characteristics of modern distributed technologies. Early design decisions have a deep impact on the implementation of distributed enterprise information systems and thus, on the ultimate quality of the software as an operational entity. Due to the fact that the distributed-software engineering process affords software engineers a number of design alternatives, it is important to develop tools and guidelines that can be used to assess and compare design artefacts quantitatively. This dissertation makes a contribution to the field of Software Engineering by proposing and evaluating software design measures for distributed enterprise information systems. In previous research, measures developed for distributed software have been focused in code attributes, and thus, only provide feedback towards the end of the software engineering process. In contrast, this thesis proposes a number of specific design measures that provide quantitative information before the implementation. These measures capture attributes of the structure and behaviour of distributed information systems that are deemed important to assess their quality attributes, based on the analysis of the problem domain. The measures were evaluated theoretically and empirically as part of a well defined methodology. On the one hand, we have followed a formal framework based on the theory of measurement, in order to carry out the theoretical validation of the proposed measures. On the other hand, the suitability of the measures, to be used as indicators of quality attributes, was evaluated empirically with a robust statistical technique for exploratory research. The data sets analysed were gathered after running several experiments and replications with a distributed enterprise information system. The results of the empirical evaluation show that most of the proposed measures are correlated to the quality attributes of interest, and that most of these measures may be used, individually or in combination, for the estimation of these quality attributes-namely efficiency, reliability and maintainability. The design of a distributed information system is modelled as a combination of its structure, which reflects static characteristics, and its behaviour, which captures complementary dynamic aspects. The behavioural measures showed slightly better individual and combined results than the structural measures in the experimentation. This was in line with our expectations, since the measures were evaluated as indicators of non-functional quality attributes of the operational system. On the other hand, the structural measures provide useful feedback that is available earlier in the software engineering process. Finally, we developed a prototype application to collect the proposed measures automatically and examined typical real-world scenarios where the measures may be used to make design decisions as part of the software engineering process.
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Yan, Ling. "A measurement-based adjustment approach to upgrade of utility data /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe.pdf.
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Rossander, Morgan. "Electromechanics of Vertical Axis Wind Turbines." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-331844.
Повний текст джерелаАнотація:
Wind power is an established mean of clean energy production and the modern horizontal axis wind turbine has become a common sight. The need for maintenance is high and future wind turbines may need to be improved to enable more remote and offshore locations. Vertical axis wind turbines have possible benefits, such as higher reliability, less noise and lower centre of gravity. This thesis focuses on electromechanical interaction in the straight bladed Darrieus rotor (H-rotor) concept studied at Uppsala University. One of the challenges with vertical axis technology is the oscillating aerodynamic forces. A force measurement setup has been implemented to capture the forces on a three-bladed 12 kW open site prototype. The normal force showed good agreement with simulations. An aerodynamic torque could be estimated from the system. The total electrical torque in the generator was determined from electrical measurements. Both torque estimations lacked the expected aerodynamic ripple at three times per revolution. The even torque detected is an important result and more studies are required to confirm and understand it. The force measurement was also used to study the loads on the turbine in parked conditions. It was discovered that there is a strong dependence on wind direction and that there is a positive torque on the turbine at stand still. The results can assist to determine the best parking strategies for an H-rotor turbine. The studied concept also features diode rectification of the voltage from the permanent magnet synchronous generator. Diodes are considered a cheap and robust solution for rectification at the drawback of inducing ripple in the torque and output voltage. The propagation of the torque ripple was measured on the prototype and studied with simulations and analytical expressions. One key conclusion was that the mechanical driveline of the turbine is an effective filter of the diode induced torque ripple. A critical speed controller was implemented on the prototype. The controller was based on optimal torque control and according to the experiments and the simulations it was able to avoid a rotational speed span. Finally, the optimal torque control was evaluated for multiple turbines with diode rectification to a common DC-link. The setup can potentially reduce the overall complexity of wind farms. The simulations suggest that stability of the system can be obtained by controlling the DC-link load as a semi constant voltage. The thesis is based on nine papers of which six are treated in the thesis summary.