Object-oriented Design Tool Research Articles

Students’ Attendance Management in Higher Institutions Using Azure Cognitive Service and Opencv Face Detection & Recognition Attendance System

This research aimed at studying the current methods of attendance used at higher institutions of learning in Uganda and the feasibility of using facial biometrics as a new method of capturing attendance. Facial biometrics is distinct from other biometrics because it can be carried out without the consent of the person involved. As a result, the researcher developed a face recognition attendance system using OpenCV and Microsoft Azure CS. Questionnaires, interviews, and observations were used to capture data for the research. The data were analyzed using SPSS to get the requirements and systems functionalities. Object-Oriented Design tools were used to model the architecture of the system. Data Flow Diagram, Use-Case Diagram, Activity Diagram, and Flow Chart were used for processing whereas Entity Relation Diagram was used for data modeling. The system was designed to facilitate attendance management of a large number of attendees with ease. Efficiency and reliability were essential features of the system. Data visualization was provided to help management make informed and timely decisions on management matters that are related to attendance. The system was developed using python Tkinter, OpenCV, and Azure CS as mentioned above. The data (images) used by the system were stored in the cloud for accessibility by multiple users. The system was tested thoroughly using various testing types to uncover and fix errors and to minimize the severity of failures.

Object-evolutionary model of the system for monitoring the water environment of the hydrophysical fields

The paper examines the development of an object model that maps the structure of an information measurement system for water environment research and the process of information evolution from a physical measured quantity to a data file. The presented object instance action and behavior models allow to describe the operation of the system by object-oriented design tools.

Rancang Bangun Aplikasi Mobile Learning Tuntunan Shalat

The development of information technology is currently growing rapidly and widely used in meeting human needs. However, the present presentation of information is still experiencing many obstacles in its less effective and inefficient presentation, such as information on worship, wudhu and adzan especially for Muslims which still must be obtained from religious figures, print media, magazines and books which is less effective and inefficient because it must provide a special time, a certain place and spend the cost to get the information. These problems can be overcome by utilizing the development of information technology that is the learning media on ​​Andoid mobile devices. The design of the application can use object oriented design tools with Unified Modeling Language modeling which is dominated by objects and denoted in specific symbols. With the application of mobile learning on mobile devices, the presentation of information about prayer, wudhu and adzan for Muslims becomes more effective, accessible anywhere, anytime, and the delivery of information becomes more interactive.
 Keywords :Android, Learning, UML, Shalat

Sugeno-Type Fuzzy Inference Model for Stock Price Prediction

operations of the prediction of stock price are complex and risky due to fluctuation in the stock market because of the vagueness, incompleteness, and uncertainty of the information used. However, it is therefore as a matter of necessity to seek to foresee stock prices because traders need to know when to invest in order to get the maximum return of the investment. This paper proposes a Sugeno-type fuzzy inference system for stock price prediction using technical indicators as its input values. Knowledge Base, Fuzzification, Inference Engine and Defuzzification are the essential components of our model. We explore Sugeno-type fuzzy inference engine to optimize the estimated result. We evaluate the degree of participation of each input parameter with Trapezoidal membership function. Center of Gravity technique is employed for defuzzification. We employ object oriented design tool to model our database. MATLAB and fuzzy relational database are used in the implementation of our study. The development of this system is based on the selection of stock data history which are studied and used for training the system. This system provides vital support to stock traders, researchers and other financial experts in making decisions as regards stock trading.

A Proposed Fuzzy Framework for Cholera Diagnosis and Monitoring

this paper, a fuzzy expert system for the diagnosis and monitoring of cholera is presented for providing decision support platform to cholera researchers, physicians and other healthcare practitioners in cholera endemic regions. The developed fuzzy expert system composed of four components which include; the Knowledge base, the Fuzzification, the Inference engine and Defuzzification. Object oriented Design tools is adopted in the design of our database. We develop our knowledge based on clinical observations, medical diagnosis and the expert's knowledge. We employ Mamdani's MAX- MIN fuzzy inference engine to infer data from the rules developed. This resulted in the establishment of some degrees of influence of input variables on the output. The technique allows for mild, moderate and severe symptoms to be applied in order to get the estimation result. Triangular membership function is employed to evaluate the degree of participation of each input parameter and the defuzzification technique employed is the Centriod of Area (COA).Twenty patients with cholera are selected and studied and the observed results computed in the range of predefined limit by the domain experts. This system will offer potential assistance to medical practitioners and healthcare sector in making prompt decision during the diagnosis of cholera.

Behavioral and structural evolution of SOA from OO

Service Oriented Architecture caters to the "Separation of Concerns" and incorporates reusability, granularity, modularity, componentization and interoperability. There are many software products that have been developed in the object-oriented paradigm. To incorporate the positive aspects of the service-oriented paradigm, they need to be evolved to the service-oriented domain. In this paper, we define an integrated approach towards consistent evolution of Object Oriented (OO) paradigm to the Service Oriented (SOA) domain. There are some proven Object Oriented Design Tools that can be used for Service Oriented Application design incorporating both the behavioral and structural aspects. The work in this paper involves a set of activities like formalizing the different UML diagrams, formal mapping of object components to service level components and establishing consistency among them. We also establish a traceability model for consistent evolution of Service Oriented Applications from existing Object Oriented Applications by mapping behavioral and structural artifacts of both domains. This will establish traceability from implementation phases back to the requirements phases of an SOA application.

Object-oriented design tools for supramolecular devices and biomedical nanotechnology.

Nanotechnology provides multifunctional agents for in vivo use that increasingly blur the distinction between pharmaceuticals and medical devices. Realization of such therapeutic nanodevices requires multidisciplinary effort that is difficult for individual device developers to sustain, and identification of appropriate collaborations outside ones own field can itself be challenging. Further, as in vivo nanodevices become increasingly complex, their design will increasingly demand systems level thinking. System engineering tools such as object-oriented analysis, object-oriented design (OOA/D) and unified modeling language (UML) are applicable to nanodevices built from biological components, help logically manage the knowledge needed to design them, and help identify useful collaborative relationships for device designers. We demonstrate the utility of these systems engineering tools by reverse engineering an existing molecular device (the bacmid molecular cloning system) using them, and illustrate how object-oriented approaches identify fungible components (objects) in nanodevices in a way that facilitates design of families of related devices, rather than single inventions. We also explore the utility of object-oriented approaches for design of another class of therapeutic nanodevices, vaccines. While they are useful for design of current nanodevices, the power of systems design tools for biomedical nanotechnology will become increasingly apparent as the complexity and sophistication of in vivo nanosystems increases. The nested, hierarchical nature of object-oriented approaches allows treatment of devices as objects in higher-order structures, and so will facilitate concatenation of multiple devices into higher-order, higher-function nanosystems.

An object-oriented design tool for associative cooling channels in plastic-injection moulds

Due to the demand for short product development cycles, plastic injection mould designers are required to compress their design time and to accommodate more late changes. This paper describes an associative design approach embedded in a cooling channel module of a mould design software package. It gives a set of comprehensive object definitions for cooling circuits, and addresses balanced or unbalanced designs. CAD algorithms that have been developed are briefly explained. With this new approach, mould designers can easily propagate changes between mould plates or inserts and the cooling system without the need for tedious rework. Hence, this approach can significantly reduce the total design time and the impact of late changes.

Cognitive support, UML adherence, and XMI interchange in Argo/UML

Software design is a cognitively challenging task. Most software design tools provide support for editing, viewing, storing, and transforming designs, but lack support for the essential and difficult cognitive tasks facing designers. These cognitive tasks include decision-making, decision ordering, and task-specific design understanding. This paper describes Argo/UML, an object-oriented design tool using the unified modeling language (UML) design notation. Argo/UML supports several identified cognitive needs of software designers. This support is provided in the form of design tool features. We describe each feature in the context of Argo/UML and provide enough detail to enable other tool builders to provide similar support in their own tools. We also discuss our implementation of the UML and XMI standards, and our development approach.

Object-extending class transformations

Abstract Reorganisation and evolution of class hierarchies is important for object-oriented system development and has received considerable attention in the literature. The contributions of this paper are: (1) a formal study of a set of extension relations and transformations on class hierarchies; (2) a presentation of a small set of primitive transformations which form a minimal and complete basis for the extension relations; and (3) an analysis of the impact of these transformations at the object level. The study leads to a better understanding of evolution and reuse of object-oriented software and class hierarchies. It also provides a terminology and a means of classification for design reuse. The theory presented in this paper is based on the Demeter data model, which gives a concise mathematical foundation for classes and their inheritance and part-of relationships. Parts of the theory have been implemented in the Demeter System TM C++, a CASE tool for object-oriented design and programming.

From objects to classes: algorithms for optimal object-oriented design

The contributions of this paper are two-fold: first, we introduce a novel, axiomatically defined, object-oriented data model called the Demeter kernel model; and secondly, we present abstraction and optimisation algorithms and their relationships for designing classes from objects in the kernel model. We analyse several computational problems underlying the class design process, which is divided into two phases; a learning phase and an optimisation phase. This study focuses on approximation algorithms for the optimisation phase and aims to lead to a better understanding and a partial automation of the object-oriented design process. The algorithms and the theory presented here have been implemented in the C++ Demeter System, a CASE tool for object-oriented design and programming.

CSL: A class specification language for object-oriented design

In this paper we present CSL, a language for class structure definition, which we developed as part of a set of object-oriented design tools whose aim is to allow an end-user to design and implement business application prototypes. The use of CSL allows, by suitable software tools, to automatically produce a written documentation of high quality and readability, the class skeletons in the chosen implementation language and a skeleton prototype in Smalltalk. CSL syntax was designed with the intent to simplify as much as possible the task of writing a translator in an object-oriented language.

Diprotalk: A tool for object-oriented design of distributed applications

In the present paper the design and implementation of a distributed system of loosely coupled Smalltalk stations are described. Smalltalk users can construct in this system target systems as a set of objects residing in more than one virtual object space. The described model of remote objects interaction enables the Smalltalk station to send several messages simultaneously to multiple remote objects.