The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Jeffrey O. Grady - One of the best experts on this subject based on the ideXlab platform.
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Traditional Structured Analysis Documentation
System Requirements Analysis, 2006Co-Authors: Jeffrey O. GradyAbstract:It is not common for a development program to document the results of the Structured-Analysis process by capturing the resultant work products. The reason for this is two-fold:(1) a lack of vision before and during the work and (2) a loss of interest after the fact. There is not any generally accepted document format for capturing the results of traditional Structured Analysis and few companies have practices that define one, call for its development, control its application, encourage its retention, or provide for its maintenance. The author experimented at one employer using released engineering drawings, but concluded that the information would be more useful if concentrated into one work product. This began a 20-year long search for the right content and format. This chapter provides the results of that search in a form that captures the results of the system-requirements-Analysis work to provide a foundation for lower-tier requirements Analysis that simply extend the scope of the Analysis downward into the system definition.
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A General Theory of Structured Analysis
System Requirements Analysis, 2006Co-Authors: Jeffrey O. GradyAbstract:Structured Analysis applies a general model to the solution of a specific problem such that the model encourages us to think of all of the factors of importance in arriving at a clear definition of the problem while allowing us to remain undistracted by unrelated factors. Structured Analysis provides an organized, systematic way of thinking about a complex problem. This process provides a model within which we can think about the important characteristics of a problem space. Structured Analysis is not a problem-solving domain, rather a problem-definition domain. Some of the models intended for software development link to Structured design methods, but the Analysis component is focused on defining the problem to be solved. All Structured models known to the author feature one or more simple diagrams the features of which relate to elements of the problem space.
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4.6 – Structured Analysis Fusion and Reunification
System Requirements Analysis, 2006Co-Authors: Jeffrey O. GradyAbstract:There was a time when some DoD procurement offices apparently felt that there was only one way to do Structured Analysis. Contractors working in compliance with AFSCM 375 series standards had to create and submit data prepared in accordance with those standards. The standard contained a series of forms. In doing Structured Analysis work, one would fill in the blanks on the forms. These forms evolved into mainframe computer data-entry forms based on 80-column Hollerith card, keypunch data entry. The punched cards were entered into the mainframe computer and operated on to produce various reports (including specifications), requiring a great deal of tolerance on the part of the reader to glean information from them. Many kinds of problems would surrender to this Structured approach, but some kinds of problems were resistant. Many software engineers at the time were using flowcharting, so there was not a great mismatch, flowcharting being very closely related to the functional flow diagramming, which was the model required by the standard.
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5.2.2 SYSTEMS BEGET SYSTEMS
INCOSE International Symposium, 1998Co-Authors: Jeffrey O. GradyAbstract:Product systems are created by process systems otherwise known as contractors, developers, suppliers, or enterprises. Owners of these process systems seldom consider themselves systems so they commonly fail to take advantage of the same powerful development process that they may be very proficient in applying to develop product systems to improve, develop, or re-engineer their own system. This paper offers some parallels between the Structured Analysis process applied for the purpose of developing product systems and the application of the same process for developing the enterprise. This application is then extended to couple the enterprise identity thus formed to multiple program planning suites through a seamless planning transform.
Ajantha Dahanayake - One of the best experts on this subject based on the ideXlab platform.
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Supporting Modeling Structured Analysis and Design
Computer-Aided Method Engineering, 1Co-Authors: Ajantha DahanayakeAbstract:The first case study focuses on evaluating the capability of the CAME environment of supporting a problem area that requires a Structured Analysis and design method. The specific problem lies in the financial and administration sector of the example problem, Dutch flower auction (see Chapter 3). Financial administration is an activity that is required frequently within organizations, and the Analysis, design, and development of such an information system are normally supported by a Structured Analysis and design method. This case investigates the modeling process and techniques required for a popular Structured Analysis and design method known as the YOURDON method. The financial and administration sector’s problem is used as the problem area of this case study based on the following considerations: a problem preferably of a general nature, meaning that development of similar information systems is common, is the object of investigation. The Dutch flower auction’s financial and administration sector’s problem is one of a typical data processing nature, and this is clearly a frequently occurring problem area in information systems development. The problem area has to be such that a Structured Analysis and design method would be adopted during information systems Analysis and design. Otherwise it could not be considered to be information systems modeling support according to a Structured Analysis and design method. The YOURDON method (Yourdon, 1989) is particularly well known for its support of the problem area of data processing and real-time systems Analysis and design. This means all clones of the YOURDON method described in literature include the real-time Analysis and design. The selection of the YOURDON method to investigate this particular problem is based on the preference of students who worked with this particular example problem based on the course “Information Systems Analysis and Design Methodologies” at Delft University of Technology. The various versions of the YOURDON method give varying interpretations of its modeling techniques Data Flow Diagram (DFD), Entity Relationship Diagram (ERD), and State Transition Diagram (STD). The automated support must provide not only the required modeling techniques, but also the different variations of these techniques as required to deal with the problem area.
Surendra M Gupta - One of the best experts on this subject based on the ideXlab platform.
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a Structured Analysis of material requirements planning systems under combined demand and supply uncertainty
International Journal of Production Research, 1993Co-Authors: Louis Brennan, Surendra M GuptaAbstract:Abstract The effects of the presence of both demand and lead time uncertainties on material requirements planning systems performance are investigated. A simulation model of a multi-level product environment is employed to evaluate the influence of these combined uncertainties in a rolling planning horizon. Their interaction with product structure variables, cost ratios and lot-sizing rules is also explored. Finally, by means of statistical Analysis of the simulation output, hypotheses relating to various variables and their interactions are formed and tested. The results highlight the significant differences between uncertain and deterministic environments.
Shuicheng Yan - One of the best experts on this subject based on the ideXlab platform.
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jointly learning Structured Analysis discriminative dictionary and Analysis multiclass classifier
arXiv: Computer Vision and Pattern Recognition, 2019Co-Authors: Zhao Zhang, Weiming Jiang, Jie Qin, Li Zhang, Min Zhang, Shuicheng YanAbstract:In this paper, we propose an Analysis mechanism based Structured Analysis Discriminative Dictionary Learning (ADDL) framework. ADDL seamlessly integrates the Analysis discriminative dictionary learning, Analysis representation and Analysis classifier training into a unified model. The applied Analysis mechanism can make sure that the learnt dictionaries, representations and linear classifiers over different classes are independent and discriminating as much as possible. The dictionary is obtained by minimizing a reconstruction error and an analytical incoherence promoting term that encourages the sub-dictionaries associated with different classes to be independent. To obtain the representation coefficients, ADDL imposes a sparse l2,1-norm constraint on the coding coefficients instead of using l0 or l1-norm, since the l0 or l1-norm constraint applied in most existing DL criteria makes the training phase time consuming. The codes-extraction projection that bridges data with the sparse codes by extracting special features from the given samples is calculated via minimizing a sparse codes approximation term. Then we compute a linear classifier based on the approximated sparse codes by an Analysis mechanism to simultaneously consider the classification and representation powers. Thus, the classification approach of our model is very efficient, because it can avoid the extra time-consuming sparse reconstruction process with trained dictionary for each new test data as most existing DL algorithms. Simulations on real image databases demonstrate that our ADDL model can obtain superior performance over other state-of-the-arts.
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jointly learning Structured Analysis discriminative dictionary and Analysis multiclass classifier
IEEE Transactions on Neural Networks, 2018Co-Authors: Zhao Zhang, Weiming Jiang, Jie Qin, Li Zhang, Min Zhang, Shuicheng YanAbstract:In this paper, we propose an Analysis mechanism-based Structured Analysis discriminative dictionary learning Analysis discriminative dictionary learning, framework. The ADDL seamlessly integrates ADDL, Analysis representation, and Analysis classifier training into a unified model. The applied Analysis mechanism can make sure that the learned dictionaries, representations, and linear classifiers over different classes are independent and discriminating as much as possible. The dictionary is obtained by minimizing a reconstruction error and an analytical incoherence promoting term that encourages the subdictionaries associated with different classes to be independent. To obtain the representation coefficients, ADDL imposes a sparse $l_{2,1}$ -norm constraint on the coding coefficients instead of using $l_{0}$ or $l_{1}$ norm, since the $l_{0}$ - or $l_{1}$ -norm constraint applied in most existing DL criteria makes the training phase time consuming. The code-extraction projection that bridges data with the sparse codes by extracting special features from the given samples is calculated via minimizing a sparse code approximation term. Then we compute a linear classifier based on the approximated sparse codes by an Analysis mechanism to simultaneously consider the classification and representation powers. Thus, the classification approach of our model is very efficient, because it can avoid the extra time-consuming sparse reconstruction process with trained dictionary for each new test data as most existing DL algorithms. Simulations on real image databases demonstrate that our ADDL model can obtain superior performance over other state of the arts.
Jonathan Lazar - One of the best experts on this subject based on the ideXlab platform.
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Web Accessibility for Users with Disabilities
Information Security and Ethics, 2008Co-Authors: Alfreda Dudley, Jonathan LazarAbstract:When designing information systems, it is important to consider the needs of users with disabilities, including those with visual impairment, hearing impairment, or color-blindness. This is especially important for designing Websites. It takes time and money to create or redesign Websites for easy access for users with disabilities. This is also known as Web accessibility. This chapter will discuss the ethical implications involved with Web accessibility. An ethical Analysis of Web accessibility will be performed using a partial combination of two Structured Analysis approaches. It is the position of the authors of this chapter that Website development should consider accessibility for users with sensory and motor disabilities as an ethical requirement.
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Web Accessibility for Users with Disabilities: A Multi-faceted Ethical Analysis
Information Security and Ethics, 1Co-Authors: Alfreda Dudley-sponaugle, Jonathan LazarAbstract:When designing information systems, it is important to consider the needs of users with disabilities, including those with visual impairment, hearing impairment, or color-blindness. This is especially important for designing Websites. It takes time and money to create or redesign Websites for easy access for users with disabilities. This is also known as Web accessibility. This chapter will discuss the ethical implications involved with Web accessibility. An ethical Analysis of Web accessibility will be performed using a partial combination of two Structured Analysis approaches. It is the position of the authors of this chapter that Website development should consider accessibility for users with sensory and motor disabilities as an ethical requirement.
