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  1. Article

    Open Access

    Assigning multiple labels of sustainable development goals to open educational resources for sustainability education

    Sustainable Development Goals (SDG) 4.7 aims to ensure learners acquire the knowledge and skills for promoting sustainable development by 2030. Yet, Open Educational Resources (OERs) that connect the public wi...

    Rui Yao, Meilin Tian, Chi-Un Lei in Education and Information Technologies (2024)

  2. Article

    Open Access

    An analysis of Hong Kong high school curriculum with implications for United Nations sustainable development goals

    The United Nations Sustainable Development Goals (SDGs) Target 4.7 stated that by 2030, all learners should acquire the knowledge and skills needed to promote sustainable development. However, only scattered s...

    Chi-Un Lei, Shan Tang in Smart Learning Environments (2023)

  3. No Access

    Chapter

    Teaching Computational Thinking: Designing Students’ Learning Experience Through Blended Learning in Higher Education Engineering Courses in HKU

    This chapter will anchor the discussion on designing a blended learning environment in The University of Hong Kong through the lens of instructional design support offered by the Technology-Enriched Learning I...

    Donn Emmanuel Gonda, **g Luo, Chi-Un Lei in Blended Learning for Inclusive and Quality… (2021)

  4. No Access

    Chapter

    Energy Harvesting in Internet of Things

    Powering billions of connected devices has been recognized as one of the biggest hurdles in the development of Internet of Things (IoT). With such a volume of tiny and ubiquitous smart physical objects in this...

    Cheuk-Wang Yau, Tyrone Tai-On Kwok, Chi-Un Lei, Yu-Kwong Kwok in Internet of Everything (2018)

  5. No Access

    Chapter and Conference Paper

    Building a Laboratory Surveillance System via a Wireless Sensor Network

    Contemporary technical experimentations become complicated. Therefore, a smart laboratory environment is needed for effective laboratory activities. In particular, a monitoring/surveillance system is needed to...

    Chi-Un Lei, J. K. Seon, Zhun Shen, Ka LokMan, Danny Hughes in Grid and Pervasive Computing (2013)

  6. No Access

    Chapter

    Efficient Design of Arbitrary Complex Response Continuous-Time IIR Filter

    A continuous-time system identification technique, Vector Fitting (VF), is extended from symmetric functions, to asymmetrical cases and is used for complex infinite-impulse-response (IIR) continuous-time filte...

    Chi-Un Lei, Chung-Man Cheung, Hing-Kit Kwan in Trends in Communication Technologies and E… (2009)

  7. No Access

    Chapter

    Multiplierless Synthesis of Multiple Constant Multiplications Using Common Subexpression Sharing With Genetic Algorithm

    In the context of multiple constant multiplications (MCM) design, we propose a novel common subexpression elimination (CSE) algorithm that models synthesis of coefficients into an estimated cost function. Alth...

    Yuen-Hong Alvin Ho, Chi-Un Lei, Ngai Wong in Advances in Communication Systems and Elec… (2008)

  8. No Access

    Chapter

    Efficient 2D Linear-Phase IIR Filter Design and Application in Image Processing

    We present an efficient and novel procedure to design two-dimensional (2D) linearphase IIR filters with less hardware resource. A 2D linear-phase FIR filter prototype is first designed using semidefinite progr...

    Chi-Un Lei, Chung-Man Cheung, Ngai Wong in Advances in Communication Systems and Elec… (2008)