Physical Sciences and Mathematics Commons^™

Generation And Reactivity Of A One-Electron Oxidized Manganese(V) Imido Complex Bearing A Macrocyclic Tetraamido Ligand, Huatian Shi, Jianhui Xie Xie, William W. Y. Lam, Wai‐Lun Man, Chi‐Keung Mak, Shek‐Man Yiu, Hung Kay Lee, Tai‐Chu Lau

Faculty of Science & Technology (THEi)

The synthesis and X‐ray structure of a new manganese(V) mesitylimido complex with a tetraamido macrocyclic ligand (TAML), [MnV(TAML)(N‐Mes)]− (1), are reported. Compound 1 is oxidized by [(p‐BrC6H4)3N]+.[SbCl6]− and the resulting MnVI species readily undergoes H‐atom transfer and nitrene transfer reactions.

Sustainable Adaptive Reuse – Economic Impact Of Cultural Heritage, Tris Kee

Faculty of Design & Environment (THEi)

Purpose

The purpose of this paper is to investigate the positive externalities of adaptive reuse of heritage buildings and the economic impact on adjacent residential property prices as adaptive reuse is emerging as a significant heritage management and cultural heritage conservation practice recognized by the International Council on Monuments and Sites.

Design/methodology/approach

Through mixed methodologies of hedonic price model and case studies of three tenement houses in Hong Kong, this paper argues that the adaptive reuse of heritage buildings increases the values of residential properties within the district and revitalizes the area economically and culturally because of the positive externalities …

Economic Sustainability Of Heritage Conservation In Hong Kong: The Impact Of Heritage Buildings On Adjacent Property Prices, Yee Chun,Tristance Kee, K.W. Chau

Support & Other Units (THEi)

Informed by the theoretical framework of sustainable development and economic theories including the cluster theory and the corollary of the Coase Theorem, this paper empirically investigates the economic impact of architectural heritage in Hong Kong. Using the hedonic price model, the research examines the economic impact of 50 publicly owned versus 50 privately owned heritage buildings on adjacent residential property prices with a sample size of over 43,240 property transaction records spanning a time period of 10 years. The research supports that heritage conservation can promote economic sustainability aside from cultural sustainability and social engagement. This research benefits government policymakers, …

Spatial Differentiation Of Heritage Trees In The Rapidly-Urbanizing City Of Shenzhen, China, Po Ying Lai, Cy Jim, Guang Da Tang, Wen Jun Hong, Hao Zhang

Faculty of Design & Environment (THEi)

In China, heritage trees are actively surveyed and reported. Over 300 relevant published articles were reviewed to assess the contents, trends and geographical distributions of the investigations. The majority of the heritage trees studies in China were found in the eastern provinces and published within 2010–2014. Most studies reported surveys on all old trees. For studies focused on single species, Ginkgo (Ginkgo biloba) and Chinese Yew (Taxus chinensis) was most frequently reported. Unlike the champion tree registry in the US and other countries, the tree registry in China emphasized more on the tree age than the size. We then have …

Molecular Dynamics Simulation On Licl-H2o Interfacial Phenomenon For Liquid Desiccant Dehumidification, Xiaohui She, Yi Chen, Yuanhao Wang, Shifeng Wang, Yimo Luo

Faculty of Science & Technology (THEi)

In this paper, molecular dynamics simulation was conducted to analyze the air-solution interface phenomenon of LiCl-H2O for liquid desiccant air dehumidification. Density profiles of ions in liquid desiccant aqueous solutions were plotted along the z axis, and distribution preferences of ions on the air-solution interface were studied. Besides, vapor pressure profiles above the solution surface were plotted, and the saturated vapor pressure was predicted and compared with the empirical data. It was found that water density remained stable in the bulk, and there was a sharp decrease on the air-solution interface. For the ions (Li+ and Cl-), a density peak …

Enabling Sustainable Built Heritage Revitalisation From A Socio-Technicalperspective: A Case Study, Daniel Chi Wing Ho, Huiying Hou

Faculty of Design & Environment (THEi)

This study aims to investigate built heritage revitalisation projects in Hong Kong through a case study.

Feeling Ai

SIGNED: The Magazine of The Hong Kong Design Institute

We all develop emotional connections to the devices we use; the smartphone that is a constant companion or the office printer that is a constant source of frustration. Soon, these machines might be able to respond in kind

Reduction Of Ruviºn To Ruiii-Nh3 By Cysteine In Aqueous Solution, Qian Wang, Wai-Lun Man, William W. Y. Lam, Shek-Man Yiu, Man-Kit Tse, Tai‐Chu Lau

Faculty of Science & Technology (THEi)

The reduction of metal nitride to ammonia is a key step in biological and chemical nitrogen fixation. We report herein the facile reduction of a ruthenium(VI) nitrido complex [(L)RuVI(N)(OH2)]+ (1, L = N,N′-bis(salicylidene)-o-cyclohexyldiamine dianion) to [(L)RuIII(NH3)(OH2)]+ by l-cysteine (Cys), an ubiquitous biological reductant, in aqueous solution. At pH 1.0–5.3, the reaction has the following stoichiometry: [(L)RuVI(N)(OH2)]+ + 3HSCH2CH(NH3)CO2 → [(L)RuIII(NH3)(OH2)]+ + 1.5(SCH2CH(NH3)CO2)2. Kinetic studies show that at pH 1 the reaction consists of two phases, while at pH 5 there are three distinct phases. For all phases the rate law is rate = k2[1][Cys]. Studies on the effects of acidity …

Mechanism Of Water Oxidation By Ferrate(Vi) At Ph 7 – 9., Gui Chen, William W. Y. Lam, Po‐Kam Lo, Wai‐Lun Man, Lingjing Chen, Kai‐Chung Lau, Tai‐Chu Lau

Faculty of Science & Technology (THEi)

The kinetics of water oxidation by K2FeO4 has been reinvestigated by UV/Vis spectrophotometry from pH 7–9 in 0.2 m phosphate buffer. The rate of reaction was found to be second‐order in both [FeO42−] and [H+]. These results are consistent with a proposed mechanism in which the first step involves the initial equilibrium protonation of FeO42− to give FeO3(OH)−, which then undergoes rate‐limiting O−O bond formation. Analysis of the O2 isotopic composition for the reaction in H218O suggests that the predominant pathway for water oxidation by ferrate is intramolecular O−O coupling. DFT calculations have also been performed, which support the proposed …

Quality Of Life In A “High-Rise Lawless Slum”: A Study Of The Kowloon Walled City, Prudencea Leung Kwok Lau, Lawrenceb Wai Chung Lai, Daniel Chi Wing Ho

Faculty of Design & Environment (THEi)

Informed by the ‘quality of life’ model with specific reference to Chinese culture, this article uses reliable and publicly available information seldom used in historical or heritage study to identify the designs of flats and builders of the “Kowloon Walled City” (hereafter the City) and reliable oral testimonies to refute some myths about the quality of life within it. This settlement has been notoriously misrepresented by some as a city of darkness that was razed from the face of the Earth before 1997 to fulfill a pre-war dream of the colonial government. This article confirms the view that this extremely …

Gaseous Pollutants Emission From Diesel Vehicles In Hong Kong, Bei, Helen Wang, Yik Sze Lau, Kin Fai Ho

Faculty of Science & Technology (THEi)

The current study presents the detailed investigation of diesel vehicles emissions utilizing chassis dynamometer test in Hong Kong. Gaseous pollutants from diesel vehicle exhaust, including nitrogen oxides (NO_x), total hydrocarbon (THC) and carbon monoxide (CO), are chosen to be the targets of this study. These pollutants were monitored real-time during different testing cycles and the data collected were used to calculate the fuel-based emission factor of each pollutant. Results showed that emission standard and driving conditions are the two main factors governing the trend of emission of these pollutants. Outliers observed in these trends are probably caused by …

Designing An Ai That Cares

SIGNED: The Magazine of The Hong Kong Design Institute

The breakthrough that could change AI from being a plaything to being a playmate with which humans can have meaningful interations may be about to come from a seemingly unlikely source.

3½ Problems For Digital Assistants

SIGNED: The Magazine of The Hong Kong Design Institute

Digital home assistants promise to make life easier and happier. But a few problems stand in their way

Ai Centaurs

SIGNED: The Magazine of The Hong Kong Design Institute

As artificial intelligence outstrips human intelligence, AIs can now beat humans at any game. A pessimist might claim that this marks the end of the line for play. But a mythical beast has come to save playtime from the robots.

We Need To Talk About 'Tesign' : Design Starting With Tech

SIGNED: The Magazine of The Hong Kong Design Institute

Emerging technologies always have the potential to change the way we live for the better. But such technolgies cannot succeed without the help of great Tesign

Robot Society

SIGNED: The Magazine of The Hong Kong Design Institute

Can the emerging field of social robotics deliver on its promise to revolutionise the way we use tech?

Biometeorological Modelling And Forecasting Of Monthly Ambulancedemand For Hong Kong, H. T. Wong, P. C. Lai, Sissi Si Chen

Faculty of Design & Environment (THEi)

Given the aging population in Hong Kong and the ever rising demand for emergency ambulance services, this study aimed to examine the effects of seasonality and weather on the demand for emergency ambulance services in Hong Kong. The feasibility of using time series models and selected weather factors to forecast average daily ambulance demand over a month was also assessed.

Evaluation Of Property Management Agent Performance : A Novel Empirical Model, Yung Yau, Daniel Chi Wing Ho

Faculty of Design & Environment (THEi)

For many different reasons, property management agents (PMAs) are appointed for managing housing developments in both public and private housing sectors in many different cities. While third-party housing management eases the burdens of property owners and tenants in taking care of their properties, it may lead to agency problems. In fact, cases of mismanagement of multi-owned properties are common in Hong Kong and other Asian cities, leading to accelerated urban decay and augmented confrontations between property owners, users and PMAs. To promote better property management services, the performance of PMAs should be evaluated so market players can benchmark the performance …

Change Agents

SIGNED: The Magazine of The Hong Kong Design Institute

Two recent visitors to HKDI helped students understand how design and a sustainable lifestyle can be good partners but as Summer Cao reports designers have to inspire consumers to adopt better habits before long term improvements in the environment will be possible.

Designed To Last

SIGNED: The Magazine of The Hong Kong Design Institute

Issues of creativity and sustainability have usually been separated since the industrial revolution in the West over two hundred years ago. While most designers have thought about how to sell their products, rather than how to save the earth, an increasing number have begun to argue that this separation is untenable. The HKDI's Yan Yan Lam is one of them. As she explains to Daniel Jeffreys, a sustainable future for the planet is something that will only happen by disign.

Waste Management And Upcycling, Katarina Brieditis, Katarina Evans

SIGNED: The Magazine of The Hong Kong Design Institute

All material is good material, you only need to create ways to use it. Re Rag Rug started as an experimental design project to explore the social and ecological factors of turning waste material into rugs…

Magic Carpets

SIGNED: The Magazine of The Hong Kong Design Institute

Two designers have harnessed creativity and innovation to recreate and invigorate a traditional Swedish handicraft using recycled materials. As Libby Zeng reports their goal is to persuade the whole world to embrace sustainable design.

Drop By Drop

SIGNED: The Magazine of The Hong Kong Design Institute

In October 2013 Yale University professor Sheila Levrant de Bretteville began exploring the water's edge at four Hong Kong harbours with an interdisciplinary group of students from HKDI. The issues that captured their attention formed the basis of some vivid and emotionally compelling work.

Moving Up

SIGNED: The Magazine of The Hong Kong Design Institute

The HKDI is on course to become a pioneer in environmentally conscious design by embedding the concept of sustainability into fashion at the start of the creative process.

Measuring The Performance Of Property Management Companies In Highriseflats, Daniel Chi Wing Ho, Ervi Liusman

Faculty of Design & Environment (THEi)

Purpose: The complex nature of multi-ownership, multi-storey buildings requires the services of property management companies (PMCs). Naturally, homeowners favor PMCs with good performance. Yet, their performances vary. The purpose of this paper is to measure the performance of PMCs in managing high-rise flats using the logic model as the contextual framework with its indicators adapted from the building quality index (BQI) scheme.

Design/Methodology/Approach: For this pilot study, the research was based on visual inspection and interviews with building management staff for the information concerning the output and outcome indicators. The authors also tested the relationship between outcomes and outputs and …

Analysis Of The Construction Waste Management Performance In Hongkong: The Public And Private Sectors Compared Using Big Data, Weisheng Lu, Xi Chen, Daniel Chi Wing Ho, Hongdi Wang

Faculty of Design & Environment (THEi)

There is an ongoing debate concerning the disparity between the public and private sectors in relation to construction waste management (CWM) performance: some argue that CWM performance between the two sectors should have no difference since they are under the governance of the same set of CWM related regulations, while others argue that public sector clients should perform better as they are subject to greater social scrutiny. Previous studies comparing CWM performance have suffered from insufficient quality data, leaving the debate on the CWM performance disparity largely inconclusive. Informed by the Coase Invariant Theorem, this research empirically compares CWM performance …

Motion Analysis Using Wearable Wireless Sensors To Support Treatment Of Diseases In The Elderly, Calvin Hoi Kok Cheung, Timothy Kin Sang Lee

Practical Social and Industrial Research Symposium

No abstract provided.

A Student-Participation Approach To Attaining Sustainability On Campus, Dennis Wing Kin Wu

Practical Social and Industrial Research Symposium

No abstract provided.

Reusing Pre-Consumer Textile Waste, Yuk Lan Lau

Practical Social and Industrial Research Symposium

No abstract provided.

Inject And Sustain Sustainability (Is2) In Automatic Fare Collection Projects, Hillary Kin Hung Lau, Nicholas Chun Kit Wong

Practical Social and Industrial Research Symposium

No abstract provided.