Yew Kwang Hooi

A Survey on Ontology Mapping Techniques

This paper surveys existing ontology mapping techniques towards data interoperability. Existing matcher algorithms and strategies are discussed generally and the research gaps are highlighted. The study concludes that semantic mapping has the biggest share of unresolved problems. Bridging the gap in semantic mapping may help improving mapping of ostensibly different domain knowledge and disparate data sources.

Study of Effectiveness and Usability of Multimedia Courseware Integrated with 3-Dimensional Model as a Teaching Aid

ools based on Information Communication Technology (ICT) face serious usability problem for effective implementation in education delivery. This paper presents the study of a multimedia courseware using 3-Dimensional (3D) model for teaching a mathematical topic on Lines and Planes in 3-Dimensions. A field study with experimental approach was carried out on randomly selected students whereby a group of students was exposed to conventional learning, whereas the other group was aided with 3D visualization software. We conclude that the latter group showed significant improvement in attention, response and recall of the content. Keywords-Dimensions, effectiveness, multimedia courseware, usability evaluation

Design, implementation and evaluation of a Virtual Showroom

This paper presents the design, development and evaluation of Virtual Showroom that focused on interactivity in manipulating the capabilities of VRML technology. The Virtual Showroom provides virtual furniture that can be viewed, navigated and interacted by the user. Besides that, users are given an option to create the interior design of their own room by dragging virtual furniture provided. Development process involves specific process such as planning, object modeling, navigation, web page integration and evaluation. Evaluation has been done using questionnaire by 30 participants that concentrate on six criteria such as ease of navigation, effectiveness of the interface and user acceptance. Result shows that all of the participants give positive feedback regarding the evaluated criteria and it proves that the objectives of the project have been successfully achieved and able to satisfy both the developer and customers. The development of Virtual Showroom showed that it is possible to have a virtual furniture shop that provided full control for the user while navigating. This can gave a new perspective for the user while do online shopping. The next step is to enhance the application by integrating avatar in order to help first time users in navigating the virtual showroom.

Ontology evaluation — A criteria selection framework

A complete ontology does not contain all domain information yet may still meet the requirements. Evaluation of ontology is necessary to determine the quality. To evaluate the quality of an ontology, various criteria have been proposed. This paper is a tribute to the works done through comparative study with the goal of identifying overlaps and establishing relationship of the various criteria. A framework is proposed to guide the choice of suitable criteria for various ontology evaluation levels and evaluation methods.

ICT in process safety management

This paper analyzes the impact of Information Communications Technology (ICT) in process safety management of Highly Hazardous Chemicals. Although computer systems have been used in control systems, much work is yet to be done to address safety at high level. The authors conducted extensive cross-field literature study and field study to verify findings. Three challenges for ICT in process safety are integration of process safety subsystems and activities; quality assurance; and propagation of safety information. Discussion begins with concepts of process safety, safety controls, safety tools and safety management. The following sections discuss software categories for process safety and analyses ICT impacts. The contribution of this paper is general picture of ICT landscape in process safety environment and fresh leads for ICT to optimize plant safety.

Technique to correct displacement of vector drawings on scaled underlying raster image

The problems of vector graphics displacement over raster drawing due to magnification in Java Graphics2D are described. Demarcation of engineering drawing is a process of highlighting sections of interest by drawing clouds. The clouds were stored as an array of points that are combined with background image at runtime. Magnification of background causes unexpected displacement of newly drawn clouds. This may be a common but unreported problem for interactive drawing in Java Graphics2D. The paper proposed a technique that successfully corrects the issue.

Automated Multi-factor Analytics for Cheat-Proofing Attendance-taking

A potential application of smartphone is as a tool to prevent attendance cheating. This paper proposes an automated multi-factor analytics using common smartphone features to identify cheating. The first factor is using Quick Response (QR) code as a unique token for validation. The second factor checks for the phones unique International Mobile Equipment Identity (IMEI) number. The third factor checks attendance time using server time. The fourth factor is geo-location of the student. Algorithm analyzes geolocation statistical variance after passing the first two factors. The algorithm is implemented as a proof of concept in a typical university lecture and lab attendance taking. The proposed algorithm has shown promising efficiency and feasibility of implementation. User survey has indicated reasonable acceptance and potential issues.

KnowledgeFlood: Sharing volunteers' experience |on flood disaster using storytelling

Floods is a common disaster that happens every year in Malaysia. Relief efforts involving government and non-government agencies are continuously dispatched to affected areas. Volunteers gain experience after participating in disaster relief efforts. Volunteers experience are circulated but not captured. Volunteers are irreplaceable resources in disaster relief efforts because of their valuable experience. In knowledge management, experiences are an example of tacit knowledge. Tacit knowledge is regarded as one of the main challenges in knowledge management. One of the best ways in sharing tacit knowledge is using storytelling. As part of knowledge management, storytelling offers sharing of a more structured and absorbable form of tacit knowledge. This paper presents the use of storytelling as a medium to share tacit knowledge in the context of flood disaster relief missions among volunteers through a knowledge sharing platform called KnowledgeFlood.

Analysis of Chemical Plant Process Safety Information Integration Model from Information System Perspective

Information with bearing on process safety can be mined from various work flows of a plant. This information is often found in reports, plant layouts and activity logbooks, which format is not structured. Hence, some information become obscured and tracking changes that compromise process safety become difficult. Whilst there are works to address access to unstructured sources, another following-up challenge is to compose information extracted from various sources meaningfully. This paper proposes a knowledge-based model to integrate safety-related information from multiple workflow sources to multiple sinks. The work provides an architectural perspective to improve visibility and interoperability of safety information within a plant environment.

Excel-Database Converting System Using Data Normalization Technique

This paper is intended to present an application system which can facilitate users in converting from Excel spreadsheet to database structure by using data normalization technique. It provides users with an automated system that can develop a database in its third normal form (3NF) from an Excel spreadsheet. There are two major problems of Excel spreadsheet that are emphasized in this project which are data redundancy and update anomaly. Prototyping-based methodology is used in order to develop this system. The system just creates the SQL codes for creating the database structure and populating the database; however, how the users make use of it such as interface for database interaction is not covered at this stage of project. Based on its functionalities, accuracy and performance, this system is able to bring more benefit and convenience for its users.