Object-oriented System Design Research Articles

Object Oriented Design Systems for WebGIS Flood Risk Classification in Samarinda, Indonesia

Floods are a prevalent environmental concern that frequently impacts urban regions. In conjunction with the growth of urbanization, the expansion of urban areas frequently gives rise to issues related to flooding. Samarinda, the administrative center of East Kalimantan Province, is intrinsically linked to the problems of flooding and waterlogging. The occurrence of floods in this urban area is frequently observed during periods of heavy rainfall and elevated water discharge from the Mahakam River and its associated tributaries. The utilization of the Web Geographics Information System to present maps depicting areas susceptible to flooding serves as a digital instrument and informational resource for urban communities. This research aims to design and implement WebGIS software for the classification of flood-prone regions in Samarinda City, employing the Object-Oriented Design System (OODS) approach. The process of flood classification modeling involves the utilization of various factors, including rainfall data, road kinds, slope gradients, and land use types. The design of this WebGIS system incorporates OODS principles, utilizing the Unified Modeling Language (UML) methodology. This approach encompasses many UML techniques, including Use Case Diagrams, Class Diagrams, and Entity Relationship Diagrams. The outcome of this study resulted in the design and implementation of the WebGIS program, which serves the purpose of classifying flood-prone areas in Samarinda City. This result encompasses object designs and interfaces that visually represent flood zones on a map. The system validation test was conducted by comparing the classification results and historical flood data, with a result of 90%.

Design of Sales Accounting Information System Using EMKM Accounting Standard

This study intends to design a sales accounting information system for UMKM Toko Utara Game. The purpose of this study is to design a sales information system with EMKM standards at Toko Utara Game that can be implemented as one of the human error risk management that might occur if the system is run conventionally and not computerized. The research method used in this study is a descriptive research method, in which the author analyzes and describes events that occur in the present with the intention of overcoming problems that occur at Toko Utara Game. The types of data used in this research are primary data and secondary data. Data collection techniques used in this study were interviews, observation and literature studies. The results of interviews and observations are used as primary data and the results of literature studies are used as secondary data. The system development methodology used in this study is the prototyping method with an object-oriented system design method using UML (Unified Modeling Language). The system design made in this study is a Use Case Diagram, an Activity Diagram, and uses an Entity Relationship Diagram (ERD). At the stage of creating the program code, researchers used the Java and MYSQL programming languages which were poured into the NetBeans IDE8.1 software using XAMPP as a web server. The result of this implementation is the design of a web-based sales application so that Toko Utara Game sales management can be computerized properly.

Web-Based Patient Referral System Design from Clinic to Hospital Using Object Oriented Programming System

The clinic in Tangerang Regency, Indonesia is a healthcare institution where people seek treatment and medical advice. However, the patient referral system to the hospital in the polyclinic still uses the old method, which involves a letter of introduction from the clinic, a conventional way of documenting the chronology of the patient's illness and using a certificate or cover letter at the clinic. Patient data with problems going to the hospital is not stored in the database, and as a result, patients may have to postpone going to the hospital. The purpose of this study is to determine the current patient referral system from clinics to hospitals and design a web-based patient referral information system that can integrate patient data into the hospital. This research uses a descriptive qualitative method to analyze and design the system, employing the Object-Oriented System Design method. The output of this research is software, which is a web-based patient referral information system that displays completed patient data and disease chronology accurately and quickly, supporting digital concepts.

Proposed Model for Remote Maintenance of CCTV Cameras

A data center is a physical facility in which an organization stores its critical applications and data. In our paper, the researchers developed an Android model for surveillance CCTV system maintenance and fault identification. The descriptive analytic approach and object-oriented systems analysis and design approach were used. The Unified Modeling Language (UML) was used as a tool in analysis and design, and Java was used as a programming language to develop an Android model to maintain CCTV faults. Image freezing, incorrect time and date, and video delay were resolved. It has been developed an Android model that works on smart phones to monitor and maintain surveillance CCTV systems. This model allows users to view faults reports and fix camera faults, such as (image freezing, camera image delay, and incorrect time on the camera) in surveillance CCTV systems from anywhere that has Internet access.

Towards a Formal Approach for Assessing the Design Quality of Object-Oriented Systems

The cost of software maintenance is always increasing. The companies are often confronted to failures and software errors. The quality of software to use is so required. In this paper, the authors propose a new formal approach for assessing the quality of object-oriented system design according to the quality assessment model. This approach consists in modeling the input software system by an automaton based on object-oriented design metrics and their relationship with the quality attributes. The model exhibits the importance of metrics through their links with the attributes of software quality. In addition, it is very practical and flexible for all changes. It allows the quality estimation and its validation. For the verification of proposed probabilistic model (automaton), they use the model-checking and the prism tool. The model-checking is very interesting for the evaluation and validation of the probabilistic automaton. They use it to approve the software quality of the three experimental projects. The obtained results are very interesting and of great importance.

Implementation of a Centralized Reference Database for GSM Service Providers in Nigeria

The advent of Global System for Mobile communication also known as GSM in Nigeria (although has provided Nigerians with effective telecommunication services) leveraged many societal ills. This has not only complicated the security problem in the country; it has also affected the economy negatively. To effectively and efficiently check these ills, a centralized referenced database for all the GSM operators in the country is of utmost important. This study is concerned with the design and implementation of a simulated centralized reference database for GSM providers in Nigeria. The traditional individual operator’s databases have not been efficient in providing access points that could allow security and regulatory bodies to monitor at real time, the activities of suspicious users. This study simulated a centralized reference database for GSM providers in Nigeria because of their cost implication. The Object-Oriented System Analysis and Design Methodology (OOSADM) were used for the analysis while the implementation was done using HTML, CSS, PHP and MYSQL database technologies. The system developed, provided access points to security and regulatory agents to monitor user activities at real time. It also performs user SIM registration; sends SMS; provide call detail records; blacklist suspicious subscriber at real time and monitor processes. The test result showed that security agents were able to receive feedback from the system seconds after a user action.

SISTEM INFORMASI MANAJEMEN BERBASIS UML (STUDI KASUS PEMELIHARAAN TOILET PADA KAMPUS FAKULTAS TEKNIK UNIVERSITAS LAMBUNG MANGKURAT)

This paper presents concept of a database system on a computer software systems. Requirements in analysis and design are a serious problem in developing a manual system into a computer software system that is fully automated. To link the two systems (manual and automatic), a modeling language Unified Modeling Language (UML) is now accepted as the de facto standard for the design and specification of object-oriented systems. In this study, ULM modeling language used to design a management information system (MIS) of Toilet Maintenance on the Faculty of Engineering, Lambung Mangkurat University using Access 2013. From this system, dean as admin of the system, can immediately know the damage or the need of maintenance in real time every day. Such information would greatly assist the management on making decision related to monitoring, maintenance and repair of toilet in the Faculty of Engineering, Lambung Mangkurat University. The final results is to keep the cleanliness and reliability of toilet in the Faculty of Engineering, Lambung Mangkurat University.

Tiếp cận hướng đối tượng cho hệ thống thông tin kho bạc nhà nước

The State Treasury of Vietnam (VNST) has been facing computerization need to carry out its heavy duty. In order to set up the information system for VNST, one approach of system analysis and design must be chosen. With its advantage features, Object-Oriented Approach is popularly used in the current information system community. The Object-Oriented Approach for the information system of VNST is introduced. For the whole system, this approach can reduce significantly the development cost and time, meanwhile keeping the reliant of the life-cycle. The object-oriented system analysis and design for the personnel subsystem has been described as an illustration of the technique in details.

Formal Specification and Verification of Few Combined Fragments of UML Sequence Diagram

UML has become a de-facto standard for design and development of object-oriented systems. On the other hand, UML includes various diagrams and notations which are missing of formal semantics. There does not exist much work to transform completely UML models to executable codes by any of the computer-aided software engineering tools because of the hidden semantics under the UML diagrams. Moreover, UML models cannot be used for automated analysis for validation and verification of the systems. Therefore, an integration of UML and semantics-based techniques such as formal methods is required to overcome such type of issues. Further, proof of correctness of software models plays a key role to ensure the quality of the final system to be developed. This paper presents a systematic method for transformation and verification of UML sequence diagrams into Z specification. The method works by translating and analysing few important combined fragments of sequence diagrams using Z notation. At first, formal specification of primary constructs is provided by capturing the hidden semantics under the diagram. Formal analysis of interaction operators namely options, alternatives, loops and break of the fragments is provided. The combined fragments are important because it allows multiple scenarios to increase an expressive power of sequence diagram by various control flows. Finally, formal analysis is provided by Z/Eves tool to check the syntax, type and proof for consistency and correctness of the specification.

Identification and Classification of Processing Unit Eligibility for Ubiquitous Computing Using Feature Selection Mechanism and Artificial Neural Network

Ubiquitous Computing is a trending innovation that allows a user to have access to many computers in a transparent manner anytime anywhere thereby enhancing computing confidence. However, the full potential of ubiquitous computing is not yet realised due to challenges including changing location of mobile users, poor network infrastructure, limited system resources, and poor transaction processing model. This work is concerned with the development of a proactive support for active transaction coordination in ubiquitous computing environment. The specific objectives are to identify relevant values of predefined key features of processing units that greatly impact on ubiquitous computing and to predict the processing capability of processing units using relevant values of the predefined features. An object-oriented analysis and system design methodology is employed and the proposed processing unit eligibility identification mechanism and neural network-based classifier is shown to effectively support ubiquitous computing.

Synthesizing Distributed Protocol Specifications from a UML State Machine Modeled Service Specification

The object-oriented paradigm is widely applied in designing and implementing communication systems. Unified Modeling Language (UML) is a standard language used to model the design of object-oriented systems. A protocol state machine is a UML adopted diagram that is widely used in designing communication protocols. It has two key attractive advantages over traditional finite state machines: modeling concurrency and modeling nested hierarchical states. In a distributed communication system, each entity of the system has its own protocol that defines when and how the entity exchanges messages with other communicating entities in the system. The order of the exchanged messages must conform to the overall service specifications of the system. In object-oriented systems, both the service and the protocol specifications are modeled in UML protocol state machines. Protocol specification synthesis methods have to be applied to automatically derive the protocol specification from the service specification. Otherwise, a time-consuming process of design, analysis, and error detection and correction has to be applied iteratively until the design of the protocol becomes error-free and consistent with the service specification. Several synthesis methods are proposed in the literature for models other than UML protocol state machines, and therefore, because of the unique features of the protocol state machines, these methods are inapplicable to services modeled in UML protocol state machines. In this paper, we propose a synthesis method that automatically synthesizes the protocol specification of distributed protocol entities from the service specification, given that both types of specifications are modeled in UML protocol state machines. Our method is based on the latest UML version (UML2.3), and it is proven to synthesize protocol specifications that are syntactically and semantically correct. As an example application, the synthesis method is used to derive the protocol specification of the H.323 standard used in Internet calls.

MVC Pattern Based on JAVA

With development of software scale, programmer has been noticed the importance of design pattern. Each pattern has different realization in different platform. As the object-oriented technique develops, application of MVC pattern has been widely used. MVC pattern doesn’t only used in component construction, but also it used in large-scale object-oriented system design, such as e-commerce system. This paper discusses application of MVC on JAVA platform, and analysis advantages and disadvantages of MVC and MVC2.

New Development of the Oriented Design against a Background of Low-Carbon Society

It is no doubt that the spotlight of all sectors of today’s society has been focusing on the energy and environment conservation as well as the low carbon living. Such ideas are not only guidance to social development, but also a great influence to every aspect of people’s life. As a basic mode of space guide, the way-finding system is closely bound up with the livelihood of people. Moreover, there is no substitute for its function. This paper is trying to illustrate the influences which resulted in the object-oriented design system and to elaborate the innovations in the setup mode under the low-carbon social background.

Spatial analysis software testing tool based on object-oriented techniques

Object-oriented (OO) programming and system design have become the scalable methodology for large-scale enterprise and technology system designs. Spatial and geographic information system (GIS)-based systems are not exempt from this trend and have widely adopted object-oriented methodology. Testing strategies for systems developed with OO technologies need to be carefully evaluated. Specific features of OO technologies such as information hiding and close tying of data structures with class structures and the natural peculiarities of the spatial data require revisiting of test strategies for spatial applications built on OO technology. This article focuses on object-oriented testing trends and the development of associated tools in the GIS industry.

D-2 SUPERSTES – Breast cancer survival query and report system

The aim of this study was to present our perspectives on healthcare information analysis at a conceptual level and the lessons learned from our experience with the development of a terminology-based enterprise electronic nursing record system – which was one of components in an EMR system at a tertiary teaching hospital in Korea – using an object-oriented system analysis and design concept.To ensure a systematic approach and effective collaboration, the department of nursing constituted a system modeling team comprising a project manager, systems analysts, user representatives, an object-oriented methodology expert, and healthcare informaticists (including the authors). A rational unified process (RUP) and the Unified Modeling Language were used as a development process and for modeling notation, respectively.From the scenario and RUP approach, user requirements were formulated into use case sets and the sequence of activities in the scenario was depicted in an activity diagram. The structure of the system was presented in a class diagram.This approach allowed us to identify clearly the structural and behavioral states and important factors of a terminology-based ENR system (e.g., business concerns and system design concerns) according to the viewpoints of both domain and technical experts.

A Petri Net Based Method for Refining Object Oriented System Specifications

In object-oriented system design, requirements are given as use cases in the form of object interaction scenarios. One need to derive, from these object interaction scenarios, object-based behavioural specifications for implementation purposes. In this paper, a Petri-net-based method is proposed for the refinement process. The method starts with specifying the object interaction scenarios as labelled nets. These labelled nets are then synthesised into an integrated net. Duplicate labels are eliminated in order to attain a uniquely labelled net, on which object-based behavioural specifications are obtained as projections.

Object-Oriented Metrics in Practice: Using Software Metrics to Characterize, Evaluate, and Improve the Design of Object-Oriented Systems

Object-Oriented Metrics in Practice: Using Software Metrics to Characterize, Evaluate, and Improve the Design of Object-Oriented Systems

AN ONTOLOGY FOR UNDERSTANDING AND APPLYING OBJECT-ORIENTED DESIGN KNOWLEDGE

After years of experience in object-oriented design, software engineers have accumulated a great deal of knowledge in the design and construction of object-oriented systems: important contributions to this field including principles, heuristics, lessons learned, bad smells, refactorings, and so on, with the resultant major improvements in software development. However, this large body of knowledge is still not well organized, its terminology is ambiguous, and it is very difficult to make practical use of the contributions made. In this regard, we believe it is important to define an ontology in order to structure and unify design knowledge, since a good understanding of the experience derived from practical work is critical for software engineers. This ontology could be used to improve communication between software engineers, inter-operability among designs, design re-usability, design knowledge searching and specification, software maintenance, knowledge acquisition, etc. In the ontology we incorporate knowledge specific to both domain and technology. Such an organized body of knowledge could also be used for registering and documenting design rationale issues.

Analytical Models for Architecture-Based Software Reliability Prediction: A Unification Framework

Traditional approaches to software reliability modeling are black box-based; that is, the software system is considered as a whole, and only its interactions with the outside world are modeled without looking into its internal structure. The black box approach is adequate to characterize the reliability of monolithic, custom, built-to-specification software applications. However, with the widespread use of object oriented systems design & development, the use of component-based software development is on the rise. Software systems are developed in a heterogeneous (multiple teams in different environments) fashion, and hence it may be inappropriate to model the overall failure process of such systems using one of the several software reliability growth models (black box approach). Predicting the reliability of a software system based on its architecture, and the failure behavior of its components, is thus essential. Most of the research efforts in predicting the reliability of a software system based on its architecture have been focused on developing analytical or state-based models. However, the development of state-based models has been mostly ad hoc with little or no effort devoted towards establishing a unifying framework which compares & contrasts these models. Also, to the best of our knowledge, no attempt has been made to offer an insight into how these models might be applied to real software applications. This paper proposes a unifying framework for state-based models for architecture-based software reliability prediction. The state-based models we consider are the ones in which application architecture is represented either as a discrete time Markov chain (DTMC), or a continuous time Markov chain (CTMC). We illustrate the DTMC-based, and CTMC-based models using examples. A detailed discussion of how the parameters of each model may be estimated, and the life cycle phases when the model may be applied is also provided

Modeling a terminology-based electronic nursing record system: An object-oriented approach

Objective The aim of this study was to present our perspectives on healthcare information analysis at a conceptual level and the lessons learned from our experience with the development of a terminology-based enterprise electronic nursing record system – which was one of components in an EMR system at a tertiary teaching hospital in Korea – using an object-oriented system analysis and design concept. Methods To ensure a systematic approach and effective collaboration, the department of nursing constituted a system modeling team comprising a project manager, systems analysts, user representatives, an object-oriented methodology expert, and healthcare informaticists (including the authors). A rational unified process (RUP) and the Unified Modeling Language were used as a development process and for modeling notation, respectively. Results From the scenario and RUP approach, user requirements were formulated into use case sets and the sequence of activities in the scenario was depicted in an activity diagram. The structure of the system was presented in a class diagram. Conclusion This approach allowed us to identify clearly the structural and behavioral states and important factors of a terminology-based ENR system (e.g., business concerns and system design concerns) according to the viewpoints of both domain and technical experts.