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Green synthesis of silver nanoparticles (AgNPs) is an interesting issue of the nanoscience and nanotechnology due to their unique properties. In the present study, Ginkgo biloba L. leaf extract was used to synthesise AgNPs. The effects of quantity of leaves, concentration of Ag nitrate (AgNO3), reaction temperature, and pH were studied to discover the optimal synthesis system. In addition, antifungal...
Additive manufacturing of three-dimensional objects are now more and more realised through 3D printing, known as an evolutional paradigm in the manufacturing industry. Artificial intelligence is currently finding wide applications to 3D printing for an intelligent, efficient, high quality, mass customised and service-oriented production process. This paper presents a comprehensive survey of artificial...
Infrastructure failures have severe consequences which often have a negative impact on the society and the economy. In this paper, we propose a machine learning model to assist in risk management to minimise the cost of infrastructure maintenance. Due to the vast volume and complexity of infrastructure datasets, such problem is often computationally expensive to compute. A Bayesian nonparametric approach...
As many online systems rely on user ratings for making decisions such as recommendations, the quality of such rating scores are increasingly important. On the other hand, users interact with each other via online communities. How such interactions affect the trueness of their ratings? Can we obtain the true rating scores that exclude the influences among users? This paper presents a conceptual framework...
We propose a novel calculation method of personality based on the Chinese physiognomy. The proposed solution combines the ancient and the modem physiognomy to summarize the corresponding relation between the personality and facial feature and model the baseline to shape the face feature. We compute histogram of image by searching for the threshold values to create a binary image in an adaptive way...
Curves have long been used for graph visualization with increased popularity in recent years. Curves are mainly used for two purposes: one is to increase readability and the other is to enhance visual aesthetic pleasingness. Although curves can be visually pleasing, the introduction of curves in graph drawing does not increase readability automatically. Attempts have been made to investigate the usability...
The subject of algorithms is a core component of Computer Science for undergraduate students. Many of innovative teaching methods have been proposed in the literature and practiced in classrooms aiming to help students learn the subject effectively. This paper reports on our experience in teaching advanced data structures and classic computer science algorithms for year 2 students. For three consecutive...
Drawing principles, or aesthetics, are important in graph drawing. They are used as criteria for algorithm design and for quality evaluation. Current aesthetics are described as visual properties that a drawing is required to have to be visually pleasing. However, most of these aesthetics are originally proposed without consideration of graph structure information. Therefore their ability in visually...
In this paper, we present a framework for visual analytics of massive complex networks. Our framework is based on the tight integration of network analysis methods with visualization methods to address the scalability and complexity. We present case studies using various networks derived from the WoS (Web of Science). More specifically, we integrated co-citation analysis of Social Network community...
Nowadays, many researchers focus on developing learning systems with personalized learning mechanisms to adaptively provide learning paths in order to promote the learning performance of individual learner. Meanwhile, finding a suitable learning path has become a crucial issue for learners who want to learn new things quickly and effectively. We propose a personalized learning path recommender in...
Recent advance in the design of near-eye displays means that the technology is mature for industrial use. A near eye display has been used as part of a remote mobile guiding system for maintenance operators in mines. In this system, a near eye display is mounted on a helmet worn by a mobile operator to display visual aids sent from a remote helper. The near eye display is partially occluding the view...
Finite Element Simulation is a powerful method to figure out the failure root causes in IC packaging or verify the solution proposals for problem solving. This paper presents three typical cases occurring in package development or mass production respectively regarding to die crack, wire heel crack and warpage-induced process issue. Die crack is a typical failure mode and is found frequently when...
A picture is worth a thousand words. To take advantage of powerful human vision, we generate visualizations for people to view and to understand the underlying data. However, these a thousand words do not necessarily tell the truth about the data. A good visualization can make the data understanding process effective, while a bad visualization may hinder the process, even convey misleading information...
Modern visual analytics tools provide mechanism for users to gain unknown knowledge through effective visual interactions for user to quickly understand the progress of algorithms and adjust the input parameters on intermediate visualizations that towards the production of most satisfied outcome. This requires the quick production of a sequence of graph visualizations. However, the traditional force-directed...
Finite Element (FE) simulation is an effective approach to investigate the thermal stress status and the reliability trend when qualifying a new packaging material going through the reliability test. However, simulation of thermal stresses in gold wires was rarely reported in previous days due to the hardness in FE model building. This study performs 3D modeling to evaluate the thermal stresses in...
Compared to the high computational complexity of many tag recommenders, a simple and heuristic approach of tag recommendation is proposed, based on tag user and item tag co-occurrences in parallel. Firstly, we use aspect model PLSA to set up a probabilistic model. We find that the probability of the recommended tags to an item for a specific user is determined by two factors: the preferences in choosing...
When visualizing graphs into node-link diagrams, angular resolution is often used as one of the aesthetic criteria measuring the diagram quality in terms of human comprehension. However, angular resolution has not been empirically validated for its relevance to humans. In addition, although many force-directed algorithms have been proposed for automatic graph drawing, performance evaluation of these...
In order to promote the development of agricultural modernization, the evaluation of the rural informatization is very significant. By the study of the domestic rural informatization evaluation methods, a new evaluating index system, including 18 indicators, is constructed for Jiangsu province. On the basis of SOM neural network model, which is able to simulate the self-organizing learning without...
Many automatic graph drawing algorithms implement only one or two aesthetic criteria since most aesthetics conflict with each other. Empirical research has shown that although those algorithms are based on different aesthetics, drawings produced by them have comparable effectiveness. The comparable effectiveness raises a question about necessity of choosing one algorithm against another for drawing...
Simulation of thermal stresses in gold wires was rarely reported in previous days due to the difficulties in FE model building. In this study, the 3D modeling was performed to evaluate the thermal stresses in gold wires with the entire package model to identify which wires to peel when verifying the second bond. The FE model in this study included the wire loops and the second bond (stitch bond) geometries...
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