Architecture Commons^™

Tree Density And Diversity In Hong Kong’S Public Housing Estates: Fromprovision Injustice To Socio-Ecological Inclusiveness., Louis Shing Him Lee, C.Y. Jim, Allen Hao Zhang

Faculty of Design & Environment (THEi)

Socio-economically underprivileged urban communities might suffer from restricted access to urban forests. Environmental injustice research on urban greenery in Asian cities is lacking. Public housing estates in Hong Kong, accommodating low-income households and over half of the 7.45 million population, were investigated for injustice in tree provision. Two clustering schemes used socio-economic and ecological characteristics to classify 93 estates. Factor analysis of 14 socio-economic variables identified four factors related to deprivation, namely ageing population, overcrowding, working poor with high academic qualifications, and marginalised language minorities. Principal component analysis of six ecological indices returned two components related to tree density and …

Tree Distribution, Morphology And Modelled Air Pollution In Urban Parks, Yang Xing, Peter Brimblecombe, Sifeng Wang, Allen Hao Zhang

Faculty of Design & Environment (THEi)

Trees offer a range of ecosystem services and remain important in providing human benefits. However, emerging literature questions the long-accepted view of trees being able to improve air quality in urban parks. The aerodynamic effect of trees was identified as a major reason for the change of pollutant distribution in near-road parks, where trees can act as porous barriers and cause localised concentration increase. Although not yet fully developed, planting strategies aiming to mitigate the negative effect of vegetation on air quality should be encouraged in future park design. In this study, we explored the effect of tree planting design …

Species Diversity And Spatial Pattern Of Old And Precious Trees In Macau, Allen Hao Zhang, Po Ying Lai, Chi Yung Jim

Faculty of Design & Environment (THEi)

The world's fast pace of urbanization has exerted profound pressure on urban trees. With over 400 years of urban history, Macau has developed an exceptionally high population density and ultra-compact mode, yet it permits survival of interesting and diverse heritage trees. These outstanding living remnants connote special values in history, ecology and botany. In conjunction with commemorative importance, they have been designated as Old and Precious Trees (OPT). This study evaluated the OPT with reference to: (a) species diversity and evenness; (b) spatial distribution; (c) tree dimensions, age and health; and (d) spatial differentiation of tree attributes by four districts …

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 …

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.

Neighborhood Variation Of Sustainable Urban Morphologicalcharacteristics, P. C. Lai, Sissi Si Chen, C. T. Low, Ester Cerin, Robert Stimson, Py Paulina Wong

Faculty of Design & Environment (THEi)

Compact cities and their urban forms have implications on sustainable city development because of high density urban settlement, increased accessibility, and a balanced land use mix. This paper uses quantitative means of understanding urban morphological characteristics with reference to the differing qualities of the urban form (i.e., street patterns, building volumes, land uses and greenery). The results, based on 89 neighborhood communities of Hong Kong, show varying degrees of regional differences in the urban built form supported by numerical statistics and graphical illustrations. This paper offers empirical evidence on some morphological characteristics that can be estimated objectively using modern geospatial …

Occurrence Of Antibiotics And Antibiotic Resistance Genes In Soils Fromwastewater Irrigation Areas In The Pearl River Delta Region, Southernchina, Livia Min Pan, L.M. Chu

Faculty of Design & Environment (THEi)

The occurrence and distribution of tetracycline (TC) and sulfamethazine (SMZ), and the corresponding antibiotic resistance genes (ARGs) were investigated in six agricultural sites in the Pearl River Delta (PRD) region in southern China. Irrigation water and irrigated soils at two different depths (0-10 and 10-20cm) were analyzed. The total concentrations of TC and SMZ in irrigation water ranged from 69.3 to 234ng/L and from 4.00 to 58.2ng/L, respectively, while the total concentrations of TC and SMZ in irrigated soils ranged from 5.00 to 21.9μg/kg and from 1.30 to 4.20μg/kg, respectively. After long-term irrigation with domestic and fishpond wastewater in the …

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 …

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.

Exploring Policy Options To Combat Illegal Micro-Apartments In Hong Kong, Yung Yau, Daniel Chi Wing Ho

Faculty of Design & Environment (THEi)

Illegal building can take multiple forms, including squatter settlements and illegal building extensions. Among the various forms of illegal building, illegal microapartments (IMAs), which take the form of unauthorised subdivided housing units, have recently aroused wide public concern in Hong Kong. On account of their unlawful nature, IMAs pose serious threats to the safety of local communities by undermining structural stability and fire safety in buildings. They may also adversely affect natural lighting and ventilation for building occupants. Fatal fires in buildings with IMAs in recent years have demonstrated the painful consequence of ignoring this issue in the city. Nonetheless, …

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 …

Professional Graphic Design Knowledge In Hong Kong: From Graduate To Professional, Benson Pun Sin Cheung

Faculty of Design & Environment (THEi)

This article investigates the scope of graphic design professional knowledge in practice, and questions whether the knowledge and training provided at university are sufficient for graduates to become design professionals in Hong Kong. Official reports indicate that Hong Kong designers’ competence is limited to skills of execution, contributing in general to a low standard of professionalism due to a lack of professional knowledge. Three kinds of respondents were involved in the study: graduate graphic designers, design firm employers, and design academics. The study relied on a mixed method approach, with the qualitative interview method as the core qualitative component and …

Innovation And User Behavior For Enhancement In Bike Sharing Programme., Henry Chung Yin Yu, Paul Lo Chi Hang

Faculty of Design & Environment (THEi)

Bike sharing is one of the fastest growing transportation mode for its environmental and economical benefits. Originated in Europe, more bike sharing programmes start up annually in major cities in the world. Hong Kong has its first bike sharing system in 2017. This paper first identifies usages and operational problems of bike sharing within the existing systems and examines how innovation in user behavior can enhance and improve the relationship between bike sharing entrepreneurs and citizen’s interest in sports facilities. By looking deeply into how innovation in bike sharing can change the mobility in the city, improving traffic network and …

Transfer Of Antibiotics From Wastewater Or Animal Manure To Soil Andedible Crops., Livia Min Pan, L.M. Chu

Faculty of Design & Environment (THEi)

Antibiotics are added to agricultural fields worldwide through wastewater irrigation or manure application, resulting in antibiotic contamination and elevated environmental risks to terrestrial environments and humans. Most studies focused on antibiotic detection in different matrices or were conducted in a hydroponic environment. Little is known about the transfer of antibiotics from antibiotic-contaminated irrigation wastewater and animal manure to agricultural soil and edible crops. In this study, we evaluated the transfer of five different antibiotics (tetracycline, sulfamethazine, norfloxacin, erythromycin, and chloramphenicol) to different crops under two levels of antibiotic-contaminated wastewater irrigation and animal manure fertilization. The final distribution of tetracycline (TC), …

Prediction Of The Root Anchorage Of Native Young Plants Using Bayesian Inference, Ryan Wai Man Yan, Lin Zhang, Flora T. Y. Leung, Ka-Veng Yuen

Faculty of Design & Environment (THEi)

The maximum vertical uproot resistance (Pmax) of a plant can be used to indicate its stability. Attempts were made to predict the Pmax of a plant empirically from some of its size parameters. In practice, an infinite number of empirical models with different complexities can be formulated. This study presents a Bayesian model class selection method to evaluate the plausibility of each empirical model among a list of model candidates. The models were ranked to identify the most plausible one. A database of vertical uproot resistance of four shrubs and trees native to Hong Kong was first compiled by performing …

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 …

Tight Budget Constraints And The Absence Of Strategic Planning – An Exploratory Analysis Of Fm Service Outsourcing, Cynthia Huiying Hou, Daniel Chi Wing Ho, Jacky C.H. Chung, Kelwin K.W. Wong

Faculty of Design & Environment (THEi)

Purpose: This paper aims to identify the factors that affect facilities management (FM) service outsourcing.

Design/Methodolgoy/Approach: Five focus group discussions (FGDs) were conducted for this study. A total of 25 professional FM managers were invited to participate in the FGDs. The qualitative data collected from the FGDs were analysed with the coding method.

Findings: FM managers commonly regard that tight budget constraints and the absence of strategic planning are two important factors that affect FM service outsourcing. Tight budget constraints reflect that clients control their service providers by constraining budgets, which creates a series of inefficiencies in the outsourcing process …

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 …

Dump It Out! An Enquiry Into Consumers’ Everyday Fashion Discourses Through Handbag, Magnum Man Lok Lam, Elita Yee Nee Lam, Wing-Sun Liu

Faculty of Design & Environment (THEi)

Handbag is an iconic fashion accessory in our material culture. Following the tradition of representational thinking, this article introduces the handbag as an epistemic consumption object through which to investigate consumer experiences, practices and identity construction in relation to everyday lived discourses. The handbag research involves an examination of participants’ personal belongings inside their bags together with phenomenological interviews concerning the associated subjective experiences along with these material objects. We demonstrate how these material possessions become the subject of the research that facilitates multiple conversations between researchers and participants as to introspect, evaluate and interpret the significance of symbolic consumption …