Mei Choo Ang

Universiti Kebangsaan Malaysia | ukm · Industry 4.0 which is formerly known as the Institute of Visual Informatics (IVI)

With the increasing use of printed circuit boardsPrinted Circuit Board (PCB) (PCBs) in the electronics industry, the assembly time per PCB is critical, as it affects the production time and costCost. This research investigates the assembly time per PCB using machines with the moving board with time delay characteristic (MBTD), which involves the co...

The purpose of this study is to investigate and describe an example of COVID-19 pandemic information visualization in human-computer interface to serve as a reference for future pandemic information visualization performance improvements. The relevant local and international literature was investigated and studied, as well as the visualization proj...

The widespread adoption of cyber-physical systems and other cutting-edge digital technology in manufacturing industry production facilities may motivate stakeholders to embrace the idea of Industry 4.0. Some industrial companies already have different sensors installed on their machines; however, without proper analysis, the data collected is not u...

The diagnosis of Parkinson's disease (PD) is important in neurological pathology for appropriate medical therapy. Algorithms based on decision tree induction (DTI) have been widely used for diagnosing PD through biomedical voice disorders. However, DTI for PD diagnosis is based on a greedy search algorithm which causes overfitting and inferior solu...

Currently, the world is facing a devastating pandemic of a novel coronavirus, which started as an outbreak of pneumonia of unknown cause in Wuhan city of China in December of 2019. According to the recent report of the World Health Organization (WHO), 210 countries convicted badly 1.8 million infections and almost 200,000 causalities. Due to the no...

PCBs are present in most modern electronics. Manufacturers have placed a heavy emphasis on optimising manufacturing to remain competitive, especially assembly time per board in order to reduce assembly cost. The target of this research is to evaluate and study the possibilities of applying a new search operator derived based on TRIZ principles into...

Sustainable issues have become more serious due to the rapid development of the global economy. Sustainable design is an approach for designing or creating sustainable products/solutions based on sustainable development principles. Patent documents contain a lot of useful inventive information which will be useful for sustainable product design. Ho...

A mathematical analysis for slip effects on MHD nanofluid in the presence of electromagnetic field and gyrotactic microorganisms is considered. The influence of activation energy and thermal radiation are also discussed. The transportation of nanofluids provides a feasible option for the enhancement of thermal distribution. A rather new aspect of t...

As rapid industrial growth continues, the need for accuracy and efficiency becomes ever more critical. This has led to an increasing demand for design innovations and the continuous improvement process of products have become inevitably critical. A torque wrench is an instrument developed in the 1930′s with the purpose of tightening fasteners, nuts...

There has been a number of researches carried out on Visualization Technique that applied into Computer Networking including Enterprise Network and Home Network. Many researchers have stated that the way data being displayed in Home Network application is the most important aspects in understanding network data issues concerning Home Network. This...

The ongoing pandemic of COVID-19 has significantly disrupted the livelihood, lifestyle and lives of humanity and decreased the quality of life for many people worldwide. These disruptions are caused by a virus, a microscopic pathogen. Pathogens such as viruses, bacteria, and others have been increasingly threatening our ability to treat their infec...

This article presented a research work to enhance one of the TRIZ tools: Trends of Engineering System Evolution (TESE) which is useful to assess the evolution direction of technical systems in 4th industrial revolution (4IR) for forecasting technological trends. TESE has hierarchical levels of multiple trends and sub-trends for forecasting the tech...

A university cafeteria is a queueing system characterised by non-stationary time of arrival with limited resources where the arrival rate is time dependent and has different pattern of arrival for different time interval. This means at certain time of the day; the arrival rate is much higher than other time. For a university cafeteria, the arrival...

This paper reports on the development of a web based virtual forest environment to raise the awareness of threatened plant species in particular for the family of Dipterocarpaceae. Tropical forests in Malaysia consists of unique ecosystems which are home to flora and fauna including the threatened plant species that are listed in the Red List by th...

This qualitative and ethnographic study examines how interactions embedded in the Collaborative Computational Thinking Design Practices (CCTDP) framework, has helped rural children think to solve STEM related open ended problems in English lessons. Our multimodal interactive approach revealed that students naturally has an orientation to problem so...

Among TRIZ (Theory of Inventive Problem Solving) methods that are applied to help solve design problems, ARIZ (Algorithm for Inventive Problem Solving) is considered to be the most powerful and is able to solve problems with “minimal changes to the system”. However, the potential solutions derived from ARIZ are solution concepts that are general an...

Nowadays designers are facing challenges in designing sustainable eco-friendly products. Sustainable eco-friendly product design requires designers to conduct rigorous product research and have a development process that incorporates existing eco-efficiency elements. Sustainable eco-friendly product requirements are becoming more critical and are c...

Key frame extraction is one of the critical techniques in computer vision fields such as video search, video identification and video forgeries detection. The extracted key frames should be sufficient key frames that preserve main actions in a video with compact representation. The objective of this work is to improve our previous action key frames...

Key frame extraction is one of the critical techniques in computer vision fields such as video search, video identification and video forgeries detection. The extracted key frames should be sufficient key frames that preserve main actions in a video with compact representation. The objective of this work is to improve our previous action key frames...

The home network has become a norm in today's life. Previous studies have shown that home network management is a problem for users who are not in the field of network technology. The existing network management tools are far too difficult to understand by ordinary home network users. Its interface is complex, and does not address the home user's n...

The global industries have been bracing themselves for the onslaught of new disruptive technologies brought about by the Fourth Industrial Revolution (4IR) initiated by the digital transformation. Disruptive technologies based on nine technological pillars of the Fourth Industrial Revolution such as Additive Manufacturing, Cloud Computing, Big Data...

Discrete mathematics is an important subject in the learning of information technology especially for programming and software development. It is a compulsory subject offered to first year students of Undergraduate Degrees in the Faculty of Technology and Information Sciences (FTSM). Discrete mathematics is a subject that is difficult to learn beca...

A university canteen is a queueing system characterised by non-stationary time of arrival with limited resources where the arrival rate is time dependent and has different pattern of arrival for different time interval. This means at certain time of the day, the arrival rate is much higher than other time and for a university canteen, the arrival r...

[This corrects the article DOI: 10.1371/journal.pone.0192246.].

Visual tracking in aerial videos is a challenging task in computer vision and remote sensing technologies due to appearance variation difficulties. Appearance variations are caused by camera and target motion, low resolution noisy images, scale changes, and pose variations. Various approaches have been proposed to deal with appearance variation dif...

PRISMA flow diagram. (DOCX)

Key frame extraction is an important algorithm for video summarisation, video retrieval, and generating video fingerprint. The extracted key frames should represent a video sequence in a compact way and brief the main actions to achieve meaningful key frames. Therefore, we present a key frames extraction algorithm based on the L1-norm by accumulati...

Key frame extraction is an essential technique in the computer vision field. The extracted key frames should brief the salient events with an excellent feasibility, great efficiency, and with a high-level of robustness. Thus, it is not an easy problem to solve because it is attributed to many visual features. This paper intends to solve this proble...

Key frame extraction is an essential technique in the computer vision field. The extracted key frames should brief the salient events with an excellent feasibility, great efficiency, and with a high-level of robustness. Thus, it is not an easy problem to solve because it is attributed to many visual features. This paper intends to solve this proble...

Lean production or lean manufacturing has become one of the most well-known paradigms for the elimination of waste in the manufacturing industries. Past research in lean shows that there are some set of techniques, tools and practices which have been applied to certain levels across firms according to the respective understanding of lean production...

The term video attack has gained attention under the name video forgery. The simplest type of video forgery is copy-move tampering which can be detected by human eyes. The complex type of video forgery is video falsifying which is more professional than copy-move as highly improved techniques are needed to detect a falsified video. The difficulty o...

ABSTRAK Kajian ini fokus kepada langkah penggunaan Matriks Percanggahan Teknikal untuk menghasil idea penyelesaian masalah reka bentuk dalam industri. Matriks Percanggahan Teknikal merupa kaedah Teori Penyelesaian Masalah Berdaya Cipta (TRIZ). Objektif utama kajian ini adalah untuk memudah penggunaan kaedah TRIZ oleh pengguna tempatan di Malaysia b...

Among TRIZ (Theory of Inventive Problem Solving) tools that are applied to help solve design problems, ARIZ (Algorithm for Inventive Problem Solving) is considered to be the most powerful and is able to solve problems with ‘minimal changes to the system”. However, the potential solutions derived from ARIZ are solution concepts that are very general...

An automated visual inspection system is needed to inspect missing component footprints on bare Printed Circuit Board (PCB). Missing component footprints on the PCB will result in lack of electronic components. Since the surface of electronic products is more compact and complex, the inspection task has become more difficult in order to achieve the...

There has been a number of researches carried out on Human-Computer Interaction (HCI) impact to home networking. Many researche s have stated that the HCI elements are the most important aspects to be considered in making user understand some of issues concerning the Home Network. This paper reviews the existing research related to Human-Computer I...

TRIZ has been well-established and is widely applied in multi-national enterprises to enhance design innovation and problem solving for design and manufacturing problems. Most applications of TRIZ utilise the engineering contradiction tools to solve design and manufacturing problems. This paper initially applied the engineering contradiction matrix...

The wireless sensor network consists of three main components: a large number of small-sized sensors, a remote sink connected to the internet, and a cluster head whose existence depends on the overall network structure. The sensor in the wireless sensor network can be deployed through many ways, such as a simple model, a random walk model, and a ra...

The increasing cost of energy especially with the recent electricity tariff hike in Malaysia has made home owners to be mindful of ways to reduce energy consumption. There are many ways to cut energy consumption at home, fundamentally they can be grouped into two types of approach namely technological and behavioural approach. Both approaches are n...

The current computer vision-based systems (CVS) are becoming computationally demanding due to the improvement of their functionalities that is difficult to be achieved with single-core frameworks. Such deficiencies of the single-core frameworks have led to the introduction multi-core frameworks to meet the required performance of their functionalit...

TRIZ is a systematic problem solving approach that assist user to derive innovative solutions to overcome many problems found in industries and research domains. It is widely applied in the industry including assistive technologies and electronic and consumer products development. In the assistive technologies, wheelchair is used broadly by people...

In the area of video content detection, and extraction the automatic moving regions detection systems play an essential role. Without the analysis of the region features, it is hard to succeed high accuracy on video retrieval, video copy detection and video forgery detection. Moving object detection becomes a hot research field and gets a great amo...

TRIZ has been well-established and is widely applied in multi-national enterprises to enhance design innovation and problem solving for design and manufacturing problems. Most applications of TRIZ utilise the engineering contradiction tools to solve design and manufacturing problems. This paper initially applied the engineering contradiction matrix...

Object tracking plays important roles in various applications such as surveillance, search and rescue, augmented reality and robotics. This paper presents an investigation on multi-threading framework capability for color-based object tracking applications. A multi-threading framework based on Threading Building Blocks (TBB) was implemented on a mu...

Object tracking plays important roles in various applications such as surveillance, search and rescue, augmented reality and robotics. This paper presents an investigation on multi-threading framework capability for color-based object tracking applications. A multi-threading framework based on Threading Building Blocks (TBB) was implemented on a mu...

With the ever competitive global market swamped with more choices of high-tech gadgets from smartphones to head-mounted display eyewear like “Google Glass”, Information and Communication Technology (ICT) is one of the key factors to engineering and technological advancement and the bridge to the future. In view of such significant importance, the g...

Calculus is not a subject that interests many students. However, it is an important fundamental subject to a broad range of education courses particularly, engineering, physics and information technology. This research looks into ways to instill and enhance the interest of students to Calculus using a student-centered web project. In this research,...

In recent years, environmental problems have become a social concern and the energy usage would contribute to these problems. The increasing of atmospheric temperature and decreasing of the ozone layer has urged the society as an end-user to come out with various methods to reduce the energy usage. There are a lot of methods to reduce the energy us...

Generating product design concepts to meet functional requirements while maintaining a specific brand identity is a daunting task for a designer. Shape grammars have been applied to describe the creation of branded product shapes via a set of shape rules and were manually used to create a family of new design concepts, which maintain the product br...

Automated visual inspection is an important step to assure the quality of printed circuit boards (PCB). Component placement errors such as missing, misaligned or incorrectly rotated component are major causes of defects on surface mount PCB. This paper proposes a novel automated visual inspection method for PCB. Typically, the proposed method inves...

TRIZ contradiction matrix was built after years of study on patent information. Designers using TRIZ contradiction matrix have to identify the improving and worsening features of their design problems and determine the inventive principles to solve their design problems. It is common to identify multiple improving and worsening features and with so...

The process of assembling electronic components on a printed circuit board (PCB) with moving board time delay characteristic involves complex co-ordination of a component feeding system, a pick and place system and the positioning movement of the PCB board. Different component arrangements in the feeder system and different assembly paths influence...

The original work on development of Augmented Reality Remedial Worksheet System for Negative Numbers Subtraction Operation (AR2WN2),which is a system designed to assist remedial learners visualize correct thinking process (CTP) on negative numbers subtraction operation, using visualization of correct thinking process (AVCTP) via an animated step-by...

Patent information and images play important roles to describe the novelty of an invention. However, current patent collections do not support image retrieval and patent images are almost unsearchable. This paper presents a short review of the existing research work and challenges in patent image retrieval domain. From the review, the image feature...

ABSTRAK Nahu bentuk adalah kaedah formal yang berkenaan dengan bentuk. Unsur dalam nahu bentuk adalah bentuk, label dan peraturan. Nahu bentuk selalu diguna untuk menganalisis dan menjana reka bentuk dalam pelbagai bidang termasuk seni lukis, seni bina, kejuruteraan dan produk konsumer bagi mengekal gaya dan struktur tertentu. Nahu bentuk yang meng...

The Bees Algorithm, a heuristic optimization procedure that mimics bees foraging behavior, is becoming more popular among swarm intelligence researchers. The algorithm involves neighborhood and global search and is able to find promising solutions to complex multimodal optimization problems. The purpose of neighborhood search is to intensify the se...

The task of designing product forms is becoming increasingly challenging as consumers demand visually pleasing products that meet functional requirements. Researchers have been working on product concept generation systems that support designers in exploring design spaces to produce large numbers of product concepts from which possible solutions ca...

The task of designing product forms is becoming increasingly challenging as consumers demand visually pleasing products that meet functional requirements. Researchers have been working on product concept generation systems that support designers in exploring design spaces to produce large numbers of product concepts from which possible solutions ca...

This paper outlines the research conducted to test a visual measurement model of the Human Capital and ICT dimensions to develop a framework of a Knowledge-based Society for Malaysia towards an Innovative Digital Economy. Based on an initial analysis on Knowledge-based Society (KS), it was found that Human capital and ICT represent important enabli...

Enterprises strive to survive in competitive consumer markets and seek means to meet consumer demands cost effectively. From this aspect, generative design methods such as shape grammars are being investigated and explored with the aim to support enterprises and their designers in creating new products that meet consumers' demands and aspirations....

This paper outlines the research conducted to develop and evaluate a Visual Art Education tool (APH-Pensil), based on the fundamental design theory. This tool consists of six modules. The Art element module help students acquire skills in creating lines, space and colour; the Design module, help students acquire skills to identify harmony, balance,...

Generative design systems have been used in the support of the generation and exploration of design concepts. A generative design system is a system that generates design concepts and requires interaction with human designers to finalise on the final design concepts. Some generative design systems applied rules and dimensional constraints to avoid...

Technological advances in the era of globalization is amazing. Industries sector did not miss the chance to use technology to support consumer product design to meet consumer demand. In the product development process, designers must find the idea that solves problem faced by consumer before designing the actual product. Usually, the idea was gener...