Software metrics serve as a significant issue to improve software quality. It is an important research of software engineering. In line with the methodologies of object-oriented analysis and design widely developed, m...
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Software metrics serve as a significant issue to improve software quality. It is an important research of software engineering. In line with the methodologies of object-oriented analysis and design widely developed, many software metrics techniques have been proposed. However, not many focus on the metrics evaluation of an inheritance hierarchy. In this paper, we propose a novel concept named unit repeated inheritance (URI) in Z notation to realize object-oriented software metrics. The approach describes an inheritance level technique (ILT) method as a guide to measure the software complexity of an inheritance hierarchy. The measures of inheritance metrics are formed based on the proposed mechanism. Also, we use Lex and Ya;cc to construct a windowing tool which is used in conjunction with a conventional C++ programming environment to assist a programmer to analyze and measure his/her C++ programs.
An object-oriented systems development approach is applied to the planning and control of software development projects with the objective examining places where the computer can provide "intelligent" facili...
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An object-oriented systems development approach is applied to the planning and control of software development projects with the objective examining places where the computer can provide "intelligent" facilitation of the process. An application design is presented that is based on the procedures used by a moderately sized custom software house. Smalltalk language object classes are defined for project entities such as client, objectives, functions, tasks, and resources. Other objects are used to generate functional and implementation plans and to provide routine reporting, maintenance, and control of active projects. Historical project data can be used to update a planning knowledge base. A constraint directed planning algorithm is used to assign resources and schedule tasks, and points within the system where project management "expertise" can be embedded within the system are identified. It is concluded that the concepts presented within this paper could be extended into related systems design and group decision making activities.
In this paper, an active RFID system compatible with IEEE802.15.4 at 2.4 GHz ISM band is designed and implemented for real-time vehicle tracking applications. A windows-based user interface software is developed by us...
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In this paper, an active RFID system compatible with IEEE802.15.4 at 2.4 GHz ISM band is designed and implemented for real-time vehicle tracking applications. A windows-based user interface software is developed by using layered architecture design and object-oriented programming which provides the ability of six wireless operations. This RFID system can identify 8 mobile vehicles in the range of 80 m from the reader within 31 ms at the output power of 4.5 dBm. Each active tag is attached to a vehicle and powered by the vehicle 12 V battery consuming 0.8 A mu A in the sleep mode and 20.8 mA in the active mode.
Microsoft's net platform provides a runtime environment for code, but its real power comes from tools and support for network and database applications.
Microsoft's net platform provides a runtime environment for code, but its real power comes from tools and support for network and database applications.
Identification of ice floes and their outlines in satellite images is important for understanding physical processes in the polar regions, for transportation in ice-covered seas, and for the design of offshore structu...
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Identification of ice floes and their outlines in satellite images is important for understanding physical processes in the polar regions, for transportation in ice-covered seas, and for the design of offshore structures intended to survive in the presence of ice. At present this is done manually, a long and tedious process that precludes full use of the great volume of relevant images now available. We describe an accurate and almost fully automatic method for identifying ice floes and their outlines. Floe outlines are modeled as closed principal curves, a flexible class of smooth nonparametric curves. We propose a robust method of estimating closed principal curves that reduces both bias and variance. Initial estimates of floe outlines come from the erosion-propagation (EP) algorithm, which combines erosion from mathematical morphology with local propagation of information about floe edges. The edge pixels from the EP algorithm are grouped into floe outlines using a new clustering algorithm. This extends existing clustering methods by allowing groups to be centered about principal curves rather than points or lines. This may open the way to efficient feature extraction using cluster analysis in images more generally. The method is implemented in an object-oriented programming environment, for which it is well suited, and is quite computationally efficient.
This paper presents a class library dedicated to digital image processing which provides resources for essential digital image processing operations. Besides its practical value, the class library is used to teach bot...
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This paper presents a class library dedicated to digital image processing which provides resources for essential digital image processing operations. Besides its practical value, the class library is used to teach both object-oriented software engineering methodology and digital image processing. The resulting module can be accessed from independent specialized applications through its public interface while its implementation details are perfectly encapsulated. First of all it is used as the inner part of an integrated environment designed for students and researchers in the field of digital image processing. This software component was built aiming for both portability and extendibility. It contains attributes and methods that allow for a wide range of digital image processing algorithms: point and geometric operations;filter, edge detection, segmentation and texture operations;and fast Fourier transforms, discrete cosine transforms, and wavelet and Gabor transformations. All these can be used for image enhancement, restoration, compression, analysis, and synthesis.
For plasma simulations, we developed a one-dimensional (1d) object-oriented Particle-in-Cell code for X11-based Unix workstations (XOOPIC) by modifying the current two-dimensional version which was originally develope...
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For plasma simulations, we developed a one-dimensional (1d) object-oriented Particle-in-Cell code for X11-based Unix workstations (XOOPIC) by modifying the current two-dimensional version which was originally developed by PTSG (Plasma theory and simulation group) in the University of California at Berkeley. We implemented a simplified field solve and current deposition in the code. We retained three components of particle velocity, although the spatial variation for particle position and field components is limited to one dimension. To verify the function of the Id code, we perform simulations with typical models such as the Child-Langmuir current model and electromagnetic wave propagation in plasma. In both cases, the simulation results quantitatively agree with the theory.
The commercially available automation systems are quite expensive. Additionally, there are license fees for the simulation and automation software. In this article a challenging automation task, namely balancing a bal...
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The commercially available automation systems are quite expensive. Additionally, there are license fees for the simulation and automation software. In this article a challenging automation task, namely balancing a ball on a spinning wheel, is solved solely by open source software and inexpensive hardware. The single-board-computer Raspberry PI, the open hardware automation system BIOE and open source software are employed.
This paper presents a model for automatically parallelizing compiler based on C++ which consists of compile-time and run-time parallelizing *** paper also describes a method for finding both intra-object and inter-obj...
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This paper presents a model for automatically parallelizing compiler based on C++ which consists of compile-time and run-time parallelizing *** paper also describes a method for finding both intra-object and inter-object parallelism. The parallelism detection is completely transparent to users.
Hur and Chon (1990) treat an important case in which static type checking according to conventional rules is often felt too restrictive for object-oriented languages, and they introduce a quasi-typename, selftype, to ...
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Hur and Chon (1990) treat an important case in which static type checking according to conventional rules is often felt too restrictive for object-oriented languages, and they introduce a quasi-typename, selftype, to stand for the type of quasi-variable self. The idea of selftype is good, but it is not quite novel. It is a special case of declaration by association as defined in the Eiffel language. One important goal of Hur and Chon seems to be to refine the static typing of variables and expressions from that explicitly declared by the programmer, by using type flow analysis. One objection to this approach is that such type inference is hardly needed and may lead to a bad programming style. Another objection is that the exact run-time type of an object can be determined at compile time only in simple special cases. Hur and Chon also ignore run-time polymorphism, one of the most important and powerful aspects of object-oriented programming.
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