Using Unified Modeling Language Research Articles

Design Of Computer Based Test Using The Unified Modeling Language

The Admission selection of Politeknik Negeri Bengkalis through interest and talent search (PMDK), Joint Selection of admission test for state Polytechnics (SB-UMPN) and Independent (UM-Polbeng) were conducted by using paper-based Test (PBT). Paper Based Test model has some weaknesses. They are wasting too much paper, the leaking of the questios to the public, and data manipulation of the test result. This reasearch was Aimed to create a Computer-based Test (CBT) models by using Unified Modeling Language (UML) the which consists of Use Case diagrams, Activity diagram and sequence diagrams. During the designing process of the application, it is important to pay attention on the process of giving the password for the test questions before they were shown through encryption and description process. RSA cryptography algorithm was used in this process. Then, the questions shown in the questions banks were randomized by using the Fisher-Yates Shuffle method. The network architecture used in Computer Based test application was a client-server network models and Local Area Network (LAN). The result of the design was the Computer Based Test application for admission to the selection of Politeknik Negeri Bengkalis.

MODELLING PARTICIPATORY GEOGRAPHIC INFORMATION SYSTEM FOR CUSTOMARY LAND CONFLICT RESOLUTION

Abstract. Since land contributes to about 73 % of most countries Gross Domestic Product (GDP), attention on land rights have tremendously increased globally. Conflicts over land have therefore become part of the major problems associated with land administration. However, the conventional mechanisms for land conflict resolution do not provide satisfactory result to disputants due to various factors. This study sought to develop a Framework of using Participatory Geographic Information System (PGIS) for customary land conflict resolution. The framework was modelled using Unified Modelling Language (UML). The PGIS framework, called butterfly model, consists of three units namely, Social Unit (SU), Technical Unit (TU) and Decision Making Unit (DMU). The name butterfly model for land conflict resolution was adopted for the framework based on its features and properties. The framework has therefore been recommended to be adopted for land conflict resolution in customary areas.

Demand side management through home area network systems

The increasing demand for power in the Electrical Power System (EPS) causes a significant increase of power in the daily load curve as well as transmission line overload. The large variability in energy consumption in the EPS combined with unpredictable weather events can lead to a situation in which, to save the stability of the EPS, power limits must be introduced or even industrial customers in a given area have to be disconnected, which causes financial losses. Nowadays, a Transmission System Operator (TSO) is looking for additional solutions to reduce peak power, because existing approaches (mainly building new intervention power units or tariff programs) are not satisfactory due to the high cost of services in combination with an insufficient power reduction effect. The paper presents an approach to reduce peak loads with the use of Home Area Network (HAN) systems installed at residential units. The algorithm of the HAN system, executed by the HAN controller, is modeled using Unified Modeling Language (UML). Then using model transformation techniques, the UML model is translated into Verilog description, and is finally implemented in the Field Programmable Gate Array (FPGA). The advantages of the proposed approach are that with only a small loss of residential user comfort, there is a gain in energy reduction for a relatively small cost, an effective and convenient design of the HAN algorithm, and the flexible maintenance of HAN systems. The latter gain is possible thanks to using modern FPGAs, which allow for dynamic reconfiguration of the HAN controller. It means that a HAN algorithm of a selected user can be exchanged without power interruption of other residential users. Apractical example illustrating the proposed approach and a calculation of the potential gains from its implementation are also presented.

Towards refactoring the Molecular Function Ontology with a UML profile for function modeling

BackgroundGene Ontology (GO) is the largest resource for cataloging gene products. This resource grows steadily and, naturally, this growth raises issues regarding the structure of the ontology. Moreover, modeling and refactoring large ontologies such as GO is generally far from being simple, as a whole as well as when focusing on certain aspects or fragments. It seems that human-friendly graphical modeling languages such as the Unified Modeling Language (UML) could be helpful in connection with these tasks.ResultsWe investigate the use of UML for making the structural organization of the Molecular Function Ontology (MFO), a sub-ontology of GO, more explicit. More precisely, we present a UML dialect, called the Function Modeling Language (FueL), which is suited for capturing functions in an ontologically founded way. FueL is equipped, among other features, with language elements that arise from studying patterns of subsumption between functions. We show how to use this UML dialect for capturing the structure of molecular functions. Furthermore, we propose and discuss some refactoring options concerning fragments of MFO.ConclusionsFueL enables the systematic, graphical representation of functions and their interrelations, including making information explicit that is currently either implicit in MFO or is mainly captured in textual descriptions. Moreover, the considered subsumption patterns lend themselves to the methodical analysis of refactoring options with respect to MFO. On this basis we argue that the approach can increase the comprehensibility of the structure of MFO for humans and can support communication, for example, during revision and further development.

Teaching and Learning Modelling and Specification Based on Mobile Devices and Cloud

Teaching Requirements Engineering and, in particular modelling and specification requirements, at the higher education institutions is an “arduous” task according to the literature. In this way, it is proposed an approach that aims to contribute for filling this gap. So, in the context of a degree in Informatics, and following the guidelines of the Information Systems courses provided by ACM/AIS, we explore the Modeling and Specification (MS) of requirements using Unified Modelling Language (UML) integrated into the TLP (TLP-MS) activity of the BML Context Oriented (BML-CO) model. These activities (modelling and specification of requirements) are supported by the use of the Lucidchart tool in a collaborative environment.

Design and build a mobile-based basic grocery ordering application using Android

The staple foods of the community are often consumed both in groups and individually. By utilizing current technology, the authors designed an application to help the grocery sales process, starting from marketing goods, ordering goods, goods transactions, and receiving goods. The seller will also face challenges in service to his consumers due to the process in trading these essential food items, such as the time-consuming ordering process for one customer, the number of customers ordering at one time, providing goods to customers, calculating the costs to be paid, and delivery goods. Transactions that have been running so far still use COD (face to face) so that in the process, there are still calculation errors and fraud. The authors analyze and design applications with Waterfall software engineering methodology and use Unified Modeling Language (UML) modeling. The application design process is carrying out using the PHP programming language and MySQL as the database. The results of this design are expecting to solve the problems faced by the community.

The Effects of Construct Redundancy on Readers' Understanding of Conceptual Models

This paper investigates the effect of construct redundancy on readers' understanding of conceptual models. Conceptual models play a crucial role in understanding the domain related to information system development. The clarity of such models can be compromised if they are constructed using a conceptual modelling grammar exhibiting construct redundancy where one real-world phenomenon maps to two or more grammar constructs. With two empirical studies on solving domain-related problems using Unified Modeling Language (UML) class diagrams as conceptual domain models, it was found that when construct redundancy is present at different strengths, then the effect of the redundancy on the understanding of a model depends on the modeling knowledge of the reader. Novice readers with minimal modeling knowledge find models difficult to interpret when a strong level of redundancy caused by distinct construct redundancy exists. However, when the models have a weak level of redundancy then these readers find them easier to understand compared to models without redundancy. In contrast, trained readers are indifferent to a weak level of redundancy in a model.

DECISION SUPPORT SYSTEM FOR DETERMINING SCHOLARSHIP RECIPIENTS USING TOPSIS FMADM METHOD

Granting scholarships to students aims to assist students in conducting lectures. Distribution of scholarships conducted by Muslim University Nusantara Al-Washliyah to help underprivileged or underachievers during their study The problem aims to choose some best alternative based on some attributes (criteria) used. In order to make decisions on fuzzy issues can be used Fuzzy Multiple AttributeDecision Making (FMADM). In this research modeling using Unified Modeling Language (UML) in FMADM with TOPSIS method and Weighted Product to select candidates of scholarship recipients.

Do UML object diagrams affect design comprehensibility? Results from a family of four controlled experiments

Objective: The main objective of our study is to assess whether the use of UML (Unified Modeling Language) object diagrams improves comprehensibility of software design when this kind of diagrams is added to UML class diagrams.Method: We have conducted a family of four controlled experiments. We involved groups of bachelor and master students.Results: Results suggest that the use of object diagrams does not always introduce significant benefits in terms of design comprehensibility. We found that benefits strongly depend on the experience of participants and their familiarity with UML. More experienced participants achieved better design comprehensibility when provided with both class and object diagrams, while less experienced seemed to be damaged when using class and object diagrams together. Results also showed the absence of substantial variations in the time needed to comprehend UML models, with or without object diagrams.Implications: Our results suggest that it is important to be aware and take into account experience and UML familiarity before using object diagrams in software modeling.

KAJIAN IMPLEMENTASI KNOWLEDGE MANAGEMENT PADA POLITEKNIK KEUNGAN NEGARA STAN

Technology provides space and challenge for universities to grow, innovate and compete globally. The higher education has long stood as a producer of knowledge. But the problem is that often the knowledge available in higher Education are not well managed. Politeknik Keuangan Negara STAN as an institution of higher education in the Ministry of Finance must undeniably have good knowledge management. Knowledge management has long been used as a system for managing knowledge by combining advances in information technology and organizational cultures. This research will discuss some alternative implementations of knowledge management in PKN STAN through five approaches, the approach function, structure approach, system approach, the approach flow of knowledge and conceptual approaches/SECI formulations. This study is expected to trigger more technical studies in the form of a knowledge management system design. The use of modeling language UML (unified modeling language) is suggested for further technical studies related to the development of knowledge management system at PKN STAN. UML will directly generate knowledge management model that can be immediately implemented.

Development of a Yorùbá Arithmetic Multimedia Learning System

In recent times, the endangerment of Yoruba has highly been speculated among Yoruba intellectuals, indigenes and enthusiasts alike. In an effort to promote the learning and use of Yoruba numeral system in carrying out day-to-day activities and transactions, the development of a Yoruba arithmetic learning system will help bridge the gap between lost Yoruba traditions of the transaction and modern day business activities. The design of this project was conceptualized using Unified modelling language (UML) tools. The resulting design and software specification was implemented using Python programming language due to its cross-platform compatibility and PyQt graphical user interface (GUI) module for the GUI. System evaluation was done using questionnaire to determine how the system is perceived by potential users. It was observed that 90% were unable to evaluate the addition expressions; 55% were unable to evaluate subtraction expressions, 65% were unable to evaluate multiplication expressions and 90% were unable to evaluate division expressions. It can be concluded from both research and the system developed that in order to make the Yoruba language more relevant in the world today, attempts such as this project must be encouraged. The issue of the almost non-existent use of Yoruba numeral must be addressed by producing learning systems or aids to help the teaching and learning of the Yoruba numerals.

A Verification‐Based Approach to Evaluate Software Architecture Evolution

As the development and wide usage of Software architecture (SA), SA evolution becomes one of the hotspots of current research in modern software engineering domain. Most current researches concentrate on the modeling of SA evolution and lack the verification and evaluation of SA evolution. We proposed a verificationbased approach to evaluate SA evolution. The basic process includes:1) using Unified modeling language (UML) sequence diagram to model the interaction of components and study different types of evolution in practical examples; 2) using SPIN-based model checking to model and verify SA evolution; 3) comparing various verification outcomes and analyzing the influence of SA evolution on SA correctness and temporal properties. Both theory analysis and an experiment on a real evolution example from Model-view controller (MVC) to Spring web MVC (SWMVC) show that the verification-based approach to evaluate SA is significant.

APPLICATION FOR MOBILE AGENT TO ACCESS MYSQL

Availability of information is increasing rapidly, the method for encoding and storage of information also increased. The number of sources of information brings several problems, among them about how to combine the distributed data storage and different. Information on an organization or company is usually stored in separate locations and different formats. When there is an increase in storage capacity and the amount of information search costs, the company faced with an abundance amount of data. System development methodology used is Rapid Application Development (RAD) with a development framework Guidlines for Rapid Application Engineering (GRAPPLE). The software used in building this application is Borland Jbuilder 9. Rational Rose 2000 is used for the analysis and design using Unified Modeling Language (UML). Mysql server is a type of database to be accessed on each operating system. Operating system used in this study is Windows XP and Linux Fedora Core. This application was developed with aglets, which is one of software for building mobile agent applications.

REST SOA Orchestration and BPM Platforms

1 SOA MODELINGAccording to [1] the Service Oriented Architecture (SOA) concept is based on the principle of developing reusable business service and building applications instead of building monolithic applications in silos.SOA has the potential to bridge the gap between business and technology, improve reuse of existing applications and interoperability with new ones. Some authors [2] consider that software services are the building blocks for SOA, and they can be composed to provide a more coarse grained functionality and to automate business processes.A modeling language is an artificial language that can be used to define system, information in the structure defined by the rules of the system. Rules are used to interpret the association of components in the system. There are two types of modeling languages - Graphical Modeling: it used a diagrammatic approach to represent the system. There are symbols and lines that connect the symbols which is used to display the relationship between the systems. Notations are used to define the constraints in the system.- Textual Modeling: it uses the keywords or special characters with parameters to represent certain information in natural language which can be used by computers for processing [3]. Expressions are used to link the relationship among the text.Service Oriented Modeling (SOM) is the first step to model services of SOA. According to the specialists [3], the approach for modeling SOA with the viewpoint from services is required. Various methods for serviceoriented modeling have been proposed to apply SOA in industrial and business environments by many researchers [4]. They can be seen in Table 1 below:Starting from this table we decided, based on the reviewed literature, to pay attention only to specific modeling approaches, which are more common and used today.1.1.SOAMLUML is used for general purpose modeling of SOA and create visual models. The services were modeled as objects and general purpose of the design was made by it. But when the degree of complexity increased it was not that efficient. This is how SoaML (Service oriented architecture Modeling Language) emerged: as a UML profile and meta-model for the modeling and design of services within a service-oriented architecture [3].SoaML was created to support the following features:* Indentifying services and their requirements.* Defining service consumers and providers as well as the service itself.* Specifying message pattern and protocols for the services.* Different Service classification schemes.* Integration and extension with OMG meta-models and BPMN.The Object Management Group (OMG) proposed SoaML in 2009 for representing SOA artifacts using Unified Modeling Language (UML) as a core-modeling standard. Moreover, a meta-model and a UML profile are provided in SoaML for the specification and design of service to SOA (meta-model for modeling the requirement for a service and UML for specifying services) [4].1.2.SOMFService Oriented Modeling Framework (SOMF) is a model driven engineering methodology which focuses on business process, and the IT is part of the lifecycle. It can also be used at standalone designing platform with other modeling languages such as UML, BPMN, or SoaML to enrich the language syntax. It can also set software development priorities during life cycle stages, and enhance the overall implementation view of the system [3].The SOMF offers specialized modeling notation to help model, analysis and identification services that is proposed by Bell. It provides a formal method of service identification at different levels of abstraction including meta-model concept and specific notation [4].1.3.SOMASOMA is a modeling technique for developing and building SOA-based systems proposed by IBM in 2004. SOMA activities focuses include: service identification (discovering candidate service and interaction between them), service specification (making decision for exposing services), and service realization (capturing service realization). …

RWiN: New Methodology for the Development of Reconfigurable WSN

This paper presents new challenges for the development of reconfigurable wireless sensor networks (RWSNs) that adapt dynamically their behaviors to their environment under different properties. An RWSN is a set of networked nodes that execute reconfigurable software tasks for the control of local sensors. We propose a new design methodology named RWiN of an RWSN using unified modeling language (UML) to analyze, construct, develop, and verify easily RWSN architectures. For that, we formulate a metamodel of RWSN based on UML to describe a zone-based architecture that uses a communication protocol for the optimization of distributed reconfigurations. To control the design complexity, we model each agent of this architecture by nested state machines. To verify the temporal constraints by communicating agents, each one is modeled by a timed automaton. The paper's contribution is applied to a case study, which is simulated with TRMSim-WSN and UPPAAL environment to expose the originality of this new architecture.

Model transformation between OPC UA and UML

OPC Unified Architecture (UA) is a platform-independent standard for message-based communication between clients and servers on various types of network to facilitate information exchange. OPC UA has been adopted in various domains such as power grids, building automation, and smart devices to support interoperability of involved systems. These domains also use Unified Modeling Language (UML) as the standard notation for data modeling or system modeling. Use of two different notations in the same domain causes compatibility issues. To address this, we present an approach for transforming OPC UA to UML to improve their compatibility and integration. In the approach, we rigorously analyze the semantics of OPC UA elements and establish a mapping between OPC UA elements and UML elements based on the analysis. Based on the mapping, we define transformation algorithms using Query/View/Transformation (QVT) which is a standard model transformation language by OMG. We demonstrate the approach using case examples in the power grid, building automation, and smart device domains.

Development of High Precision Differential GPS System in Kazakhstan

Objectives: This article describes design and classification of a variety of states and events that form the basis for information model of the local system of differential correction in the post-processing mode. Methods: The article introduces computational methods of differential correction that employ measurements from single-frequency GPS receivers. Experimental results confirmed estimation accuracy of the methods in post-processing mode, which proved that the developed differential GPS system demonstrated appropriate performance when compared with the existing analogous systems in the world. Findings: The research reveals a set of states and events fundamental for developing an LSDC information model in post-processing mode. A GPS-based system of differential correction is one of the main alternatives in solving problems of high-precision satellite navigation. In future, this system under development will be able to operate in real time and post-processing modes, static and dynamic modes, as well in the mode of a thick client (rover coordinates are computed using the mobile station) and a thin client (rover coordinates are computed using the base station). The composition and structure of the model in post-processing mode are examined. As a result of this research, a systematic project of the LSDC GPS was developed. These designs were made using Unified Modeling Language (UML), which represents functional requirements and appropriate system diagrams of mathematical provision, LSDC hardware and software. High accuracy and precision of the developed system are verified by experimental results shown in the paper. Applications/Improvements: The GPS system should be developed further to be able to cover other modes of operation.

A Secure Service Oriented Architecture Based Mobile SDI Model for Mineral Resources Management in India

Economic growth rate of any country largely depends on the development of mineral sector. Then, the level of technology employed for meeting the extraction conditions must meet environmental norms. Exploration of mineral resources in India and mining is a ready application for technologies for ensuring productivity and efficiency. Use of Geographical Information System (GIS) in mineral resources management is of great help, where each stakeholder can access, use and exchange spatial and nonspatial data for social, economic and environmental activities. With development of communication and information technology, integration of heterogeneous repository of data from the different data sources can be achieved by using Spatial Data Infrastructure (SDI). At the present scenario, the dynamic updating of data, data analysis, data visualisation and data uploading are lacking in most of the information system in GIS environment. For real time integrated mineral resources information monitoring, it is essential to integrate information system with geospatial database. Visualisation of integrated mineral resources information is possible on the desktop environment with the help of GIS. But it is not sufficient for updating the data in dynamic environment. It may be possible to perform dynamic tasks like update, analysis and visualisation of mineral resources information through the mobile devices with the modern high end mobile communication infrastructure. It makes it possible and very useful to take the decision at anytime from anywhere in the world. The data repositories can also be timely updated with the help of common mobile devices from any location, of course with security measure in place. In the present work, a three tier secure framework has been proposed for the mobile based SDI Model for the better management of mineral resources information infrastructure with the use of mobile devices by the integration of geospatial database. The interaction between the various services in the proposed Model has been modeled by using Unified Modeling Language (UML) use case and activity diagrams.

Modeling and Simulation of K-Means Clustering Learning Object Adaptability Model for Selecting Materials in E-Learning

The delivery of adaptive instructional materials to learners is a good way of achieving effectiveness in learning session. Fitting teaching material varies from one student to another based on students’ knowledge level, that is, cognitive status and ability to learn. This study proposes a model for selecting appropriate learning materials to learners. The proposed model was formulated using the K–means Clustering Algorithm and represented using Unified Modelling Language (UML). The adaptive model was simulated using the KMeans Clustering Algorithm to train and test the adaptive model using the historical data collected from a developed e – Learning system for Undergraduate students taking Introduction to FORTRAN programming Language course. The evaluation results showed that the system had precision of 0.7143, 0.6667, 1.000 and 0.2942 for learning object 1, learning object 2, learning object 3 and learning object 4 respectively. Also, the recall results were 0.6250, 0.8889, 0.6667 and 0.3864 for learning object 1, learning object 2, learning object 3 and learning object 4 respectively. The system can be used to effectively and successfully assign learning materials to learners based on their cognitive level. General Terms Data Mining, Clustering

Analysis of Sequence Diagram Layout in Advanced UML Modelling Tools

Abstract System modelling using Unified Modelling Language (UML) is the task that should be solved for software development. The more complex software becomes the higher requirements are stated to demonstrate the system to be developed, especially in its dynamic aspect, which in UML is offered by a sequence diagram. To solve this task, the main attention is devoted to the graphical presentation of the system, where diagram layout plays the central role in information perception. The UML sequence diagram due to its specific structure is selected for a deeper analysis on the elements’ layout. The authors research represents the abilities of modern UML modelling tools to offer automatic layout of the UML sequence diagram and analyse them according to criteria required for the diagram perception.