Quality is probably one of the most serious concerns of today"s software *** software applica- tions exhibiting a certain complexity, the quality of a product can only be guaranteed by a methodological approach, ...
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Quality is probably one of the most serious concerns of today"s software *** software applica- tions exhibiting a certain complexity, the quality of a product can only be guaranteed by a methodological approach, using appropriate administration and tools. The methodology andadministration must be mani- fested in a well-definedand well-observedapplication development *** must integrate the human activity, the tools, and the intermediateand final work products into a coherent flow of actions. In this regard, the developmentof applications follows patterns that are well establishedin other industries wherean application development (AD)process model is defined andthen executed via an interpretation mechanism. Thecomplexity of the developmentproc- ess makesit necessary tosupport and integrate all of its aspects by means ofon-lineinteractive computer support. Computer-aidedprocess support in the gen- eral sense we call work management. This paper ex- plains the concepts of an application development process model andof work management forapplica- tion development underADlCycIe- and its relation to project management.
Dynamic programming Languages, such as Java, JavaScr ipt, PHP, Perl, Python, Ruby, etc., are dominating languages for programming the web. HW/SW co-designed virtual machine can significantly accelerate their execution...
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ISBN:
(纸本)9781450320856
Dynamic programming Languages, such as Java, JavaScr ipt, PHP, Perl, Python, Ruby, etc., are dominating languages for programming the web. HW/SW co-designed virtual machine can significantly accelerate their executions by transparently leveraging internal HW features via an internal compiler. We also argue for a common API to interface dynamic languages with the HW/SW co-designed virtual machine, so that a single internal compiler can accelerate all major dynamic languages.
An application generator is a generalized application development tool with which professional programmers develop applications using a fourth-generation language. This paper describes the requirements that led to the...
An application generator is a generalized application development tool with which professional programmers develop applications using a fourth-generation language. This paper describes the requirements that led to the Cross System Product application generator, and how the product progressed from a single-environment product to the current multienvironment product. Also described are how the Cross System Product fits within systems Application Architecture and how that may affect the future of the Cross System Product.
Character loss in a conceptual computer at its input terminals is analyzed. This is first done within the classical framework in which a system must be designed to allow no loss whatsoever. The problem is then treated...
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Character loss in a conceptual computer at its input terminals is analyzed. This is first done within the classical framework in which a system must be designed to allow no loss whatsoever. The problem is then treated where a system can allow some degree of loss. To this end, a generalized mathematical model for character schemes is constructed. It is then shown that, in this framework, character arrivals can be approximated by a Poisson source, allowing the problem to be reformulated as a question in queuing theory. As such, one can solve the problem as a limiting case of a problem which has already been solved. Finally, the resulting formulas for loss are approximated by formulas which can easily be applied. Certain conclusions may readily be drawn. One is that a vastly enlarged system may be designed if one allows some trivial amount of loss. Another is that various schemes for avoiding loss, which have been used in industry, have often been unnecessary.
A mathematical model which utilizes queuing theory is devised for estimating the storage requirements of a message switching computer. Since the storage needed for a message is proportional to the message length, the ...
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A mathematical model which utilizes queuing theory is devised for estimating the storage requirements of a message switching computer. Since the storage needed for a message is proportional to the message length, the familiar derivation of a queue distribution in terms of the number of messages is not applicable. Instead the composite queue, resulting from a number of sending lines, is developed in terms of fixed size units. This is normally distributed with mean and variance given as functions of the load factors of the sending lines. Occurrences of machine failures due to insufficient storage capacity are then shown, on certain assumptions, to be exponentially distributed. The method involves bold simplifications at a number of points with resulting errors which are moderate and in the direction of safety. The application to concrete problems is illustrated.
Ever since the industrial revolution in the eighteenth century, the proportion of the population engaged in argriculture has been steadily falling while the number of industrial workers has increased; that is, until t...
Ever since the industrial revolution in the eighteenth century, the proportion of the population engaged in argriculture has been steadily falling while the number of industrial workers has increased; that is, until the mid 1960s. In 1966, employment in UK manufacturing peaked at 8.6 million and since then about two million have left the industrial sector. At one time in 1981, the engineering industry was losing 1,000 jobs a day.
The Academic systems and programming Section at The University of Akron is the organizational unit of the Computer Center responsible for user services directed towards the academic community. The section is comprised...
ISBN:
(纸本)9781450374170
The Academic systems and programming Section at The University of Akron is the organizational unit of the Computer Center responsible for user services directed towards the academic community. The section is comprised of a manager and six programmer/analysts. They are supplemented by from five to ten student assistants when school is in *** is the objective of the section to so structure its services that a Computer Center user may gain access to his choice of computer resources and services without having to consult with the section. Though this is an unattainable ideal, a conscientious attempt is continually made to accomplish these aims. Since the University has a heavy commitment to part-time and evening students, this service orientation is particularly attentive to the special needs of this student group.
The term "Computer Aided Manufacturing" (CAM) congers up different ideas in the minds of different people, depending upon their particular area of expertise, and the size and type of the company they are ass...
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作者：
Fenton, L.H.IBM
VM Programming Systems Kingston NY USA IBM VM Programming Systems Kingston NY USA
The report addressed five major areas of concern: quality, the interface between the customer and IBM, the need for better problem diagnostic tools, and the process for delivering product and service. In addition, rec...
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The report addressed five major areas of concern: quality, the interface between the customer and IBM, the need for better problem diagnostic tools, and the process for delivering product and service. In addition, recommendations relating to education were included throughout the report. Each of the areas is discussed in detail. IBM's general direction and strategy to address the generic problem is presented.
B3-splines are introduced in this paper with explicit expressions. The new splines are extensions of the B-spline but overcome the latter's weakness of not passing through interpolation points for curve or surface...
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B3-splines are introduced in this paper with explicit expressions. The new splines are extensions of the B-spline but overcome the latter's weakness of not passing through interpolation points for curve or surface fitting. Between consecutive control points, three cubic functions are used. Computation is simple with data from prestored tables. No trial-and-error steps in selecting control points are necessary in order to create smooth interpolation. With other good properties, such as C 2 -continuity and localization, the new splines can be implemented very well for interactive curve and surface fitting in computer-aided design (CAD). This paper describes the exact cubic expressions and their derivations. Their advantages over B-spline and Bézier spline for interactive applications are discussed.
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