Reflection for tri-city student exchange programmes on students\u27 learning

Student exchange programmes or study tours have been used in various education institutes in different regions to enrich students’ learning experience. Previous studies have demonstrated the positive impacts of student exchange programmes to students’ learning and development. However, the effectiveness in achieving the intended goals of a student exchange tour might substantially affected by the programme design, planning and implementation. This paper discusses the development and implementation of a tri-city student exchange programme in achieving the intended learning outcomes based on a joint student exchange programme to Ngee Ann Polytechnic (NP), Singapore. A group of higher diploma engineering students in Hong Kong attended the second tri-city student exchange programme in Singapore and mixed together with the local Singaporean students and another group of National Institute of Technology (NIT), Kumamoto College students from Japan for a series of exchange activities, including joint project development, industrial visits and cultural activities. With the effective coordination among the three institutes involved, the tour was successfully completed with positive feedbacks from various stakeholders. This paper aims to address and reflect the benefits of undertaking a student exchange programme to higher diploma engineering students in Hong Kong. Students’ feedbacks and reflective writings of the programme will be reviewed and analyzed. Discussion on the design, planning and implementation for future multi-city student exchange programmes as an effective learning tool is also provided in the paper. Recommendations in organizing similar programmes will be addressed

Pivot calibration concept for sensor attached mobile c-arms

Medical augmented reality has been actively studied for decades and many methods have been proposed torevolutionize clinical procedures. One example is the camera augmented mobile C-arm (CAMC), which providesa real-time video augmentation onto medical images by rigidly mounting and calibrating a camera to the imagingdevice. Since then, several CAMC variations have been suggested by calibrating 2D/3D cameras, trackers, andmore recently a Microsoft HoloLens to the C-arm. Different calibration methods have been applied to establishthe correspondence between the rigidly attached sensor and the imaging device. A crucial step for these methodsis the acquisition of X-Ray images or 3D reconstruction volumes; therefore, requiring the emission of ionizingradiation. In this work, we analyze the mechanical motion of the device and propose an alternatative methodto calibrate sensors to the C-arm without emitting any radiation. Given a sensor is rigidly attached to thedevice, we introduce an extended pivot calibration concept to compute the fixed translation from the sensor tothe C-arm rotation center. The fixed relationship between the sensor and rotation center can be formulated as apivot calibration problem with the pivot point moving on a locus. Our method exploits the rigid C-arm motiondescribing a Torus surface to solve this calibration problem. We explain the geometry of the C-arm motion andits relation to the attached sensor, propose a calibration algorithm and show its robustness against noise, as wellas trajectory and observed pose density by computer simulations. We discuss this geometric-based formulationand its potential extensions to different C-arm applications.Comment: Accepted for Image-Guided Procedures, Robotic Interventions, and Modeling 2020, Houston, TX, US

Fully (Re)configurable Interactive Material through a Switchable Photothermal Charge Transfer Complex Gated by a Supramolecular Liquid Crystal Elastomer Actuator

Charge transfer complexes (CTCs) based on self-assembled donor and acceptor molecules allow light absorption of significantly redshifted wavelengths to either the donor or acceptor. In this work, we demonstrate a CTC embedded in a hydrogen-bonded liquid crystal elastomer (LCE), which in itself is fully reformable and reprocessable. The LCE host acts as a gate, directing the self-assembly of the CTC. When hydrogen bonding is present, the CTC behaves as a near-infrared (NIR) dye allowing photothermal actuation of the LCE. The CTC can be disassembled in specific regions of the LCE film by disrupting the hydrogen bond interactions, allowing selective NIR heating and localized actuation of the films. The metastable non-CTC state may persist for weeks or can be recovered on demand by heat treatment. Besides the CTC variability, the capability of completely reforming the shape, color, and actuation mode of the LCE provides an interactive material with unprecedented application versatility

Design and development of multimedia and multi-marker detection techniques in interactive augmented reality colouring book

The aim of this paper is to the design and develop multimedia and multi-markers detection techniques in interactive Augmented Reality (AR) colouring book application for aquarium museum. This study is conducted to create entertaining AR colouring mobile application on Android Operating System which allows users to express, create and interact with their creativity through colouring activities. It allows users to engage and relish the stimulating colouring book content by switching between a reality and augmented world. Conversely, users may tend to lose interest in the colouring activities, but with AR technology it keeps colouring relaxing and inspiring. The design and development of this project was carried out using Unity3D integrates with Vuforia Engine. The multimedia and multi-markers scripting was written in C# programming language