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A CONCEPTUAL FRAMEwORK FOR DELIVERING SUSTAINABLE BUILDING ENERGY EFFICENCY RETROFIT USING ThE ENERGY PERFORMANCE CONTRACTING(EPC)IN ChINA

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Journal of Green Building 2013年第1期8卷 177-190页

作者： Pengpeng Xu Edwin h.w.chan Patrick T.I.Lam International Research Center of Sustainable Built Environment The Faculty of Construction Management and Real EstateChongqing UniversityChongqingChina Building and Real Estate Department The Hong Kong Polytechnic UniversityHong Kong S.A.R.China

Sustainable building has become a future development trend in the building *** Energy Efficiency Retrofit(BEER)provides excellent opportunities to reduce energy consumption in existing buildings,and to promote environmental protection,the rational use of resources,occupants’health,all of which helps to improve the sustainability of existing *** Performance Contracting(EPC)provided by Energy Service Companies(ESCOs)is a market mechanism to provide financial and technological support for energy efficiency *** paper aims to develop a sustainability promotion framework for BEER projects under the EPC mechanism to link the sustainable performance of BEER with the success factors of this EPC *** types of building have different energy consumption *** research focuses on hotel buildings in *** paper develops a framework for sustainable BEER through an EPC mechanism in hotel buildings based on the EFQM Excellence Model for business quality *** were conducted with experts from the hotel industry,from energy service companies and with *** on the developed framework,the study has identified 11 performance indicators for sustainable BEER and 28 success factors of an EPC *** provides significant groundwork for future study in developing an assessment model to evaluate the sustainability of BEER projects.

关键词： building energy efficiency hotel retrofit energy performance contracting(EPC) ESCO China

REAL ESTATE DEVELOPERS’CONCERNS ABOUT UNCERTAINTY IN BUILDING ENERGY EFFICIENCY(BEE)INVESTMENT-A TRANSACTION COSTS(TCS)PERSPECTIVE

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Journal of Green Building 2012年第4期7卷 116-129页

作者： Queena K.Qian Edwin h.w.chan Lennon hT Choy Building and Real Estate Department The Hong Kong Polytechnic UniversityHong Kong S.A.R.China wuppertal Institute for Climate Environment and EnergyGermany

Buildings account for 40% of global energy consumption and nearly one-third of global CO_(2) emissions;and the resulting carbon footprint significantly exceeds that of all forms of transportation combined. Attractive opportunities exist to reduce buildings’ energy use at lower costs and higher returns than in other sectors. This paper analyzes the concerns of uncertainty, in terms of transaction costs, to the real estate developers when they make decisions about investing in Building Energy Efficiency (BEE). To solicit views of developers regarding BEE investment, in-depth interviews were conducted with 15 executives and architects who work in big real estate development firms covering 80% of real estate activities in hong Kong. This research applies transaction cost economics (TCE) to study the underlying reasons resulting from uncertainty that cause market reluctance to accept BEE by choice. It provides a detailed analysis of the current situation and future prospects for BEE adoption through studying the impacts from three aspects: economic, market and policy uncertainties. It delineates the market and suggests possible policy solutions to overcome the uncertainties and to attain the large-scale deployment of energy-efficient building techniques. The findings establish the groundwork for future studies on how to choose a particular policy package and what roles government should play to solve the existing problems in BEE development.

关键词： Building Energy Efficiency(BEE) Transaction Costs(TCs) uncertainty real estate developers hong Kong

Tunable negative coefficient microwave photonic filter based on a polarization modulator and a polarization beam interferometer

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Chinese Optics Letters 2015年第5期13卷 14-16页

作者：金岩冰 Erwin h.w.chan 冯新焕王旭东关柏鸥 Institute of Photonics Technology Jinan University School of Engineering and Information Technology Charles Darwin University

A new tunable microwave photonic notch filter with negative coefficients is presented. It is based on a polarization modulator and a polarization beam interferometer. Experimental results are presented that embody the... 详细信息

关键词： Bandpass filters Interferometers Polarization

Investigation on microwave photonic filter group delay performance

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Chinese Optics Letters 2017年第8期15卷 22-25页

作者：陈碧娟 Erwin h.w.chan 冯新焕王旭东关柏鸥 Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics Technology Jinan University School of Engineering and Information Technology Charles Darwin University

Processing microwave signals in the optical domain has a number of advantages including high reconfigurability, ultra-wide bandwidth, and immunity to electromagnetic interference （EMI）w. It also provides new capabil... 详细信息

关键词： Bandpass filters Brillouin scattering Fourier transforms Microwave photonic filters Optical signals Spatial light modulators

Evaluation of particle packing models by comparing with published test results

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Particuology 2014年第5期12卷 108-115页

作者： K.w.chan A.K.h.Kwan Department of Civil Engineering The University of Hong Kong

The existing particle packing density models each with two or more parameters accounting for certain particle interactions （the loosening effect parameter, wall effect parameter, wedging effect parameter, and compaction index, denoted by a, b, c, and K, respectively） may be classified into the 2-parameter model （with a and b incorporated）, the compressible model （with a, b, and 1（incorporated）, and the 3- parameter model （with a, b, and c incorporated）. This paper evaluates these models by comparing their respective packing density predictions with the test results published in the literature. It was found that their accuracy varies with both the size ratio and volumetric fractions of the binary mix. In general, when the size ratio is larger than 0.65, all the packing models are sufficiently accurate. however, when the size ratio is smaller than 0.65, some of them become inaccurate and the errors tend to be larger at around the volumetric fractions giving maximum packing density. Relatively, the 3-parameter model is the most accurate and widely applicable.

关键词： Packing density Particle packing models Particle interactions

Towards explicit representation of an artificial neural network model: Comparison of two artificial neural network rule extraction approaches

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Petroleum 2020年第4期6卷 329-339页

作者： Veronica K.h.chan Christine w.chan Energy Informatics Laboratory Faculty of Engineering and Applied ScienceUniversity of ReginaReginaSK S4S 0A2Canada

In the quest for interpretable models,two versions of a neural network rule extraction algorithm were proposed and *** two algorithms are called the Piece-wise Linear Artificial Neural Network(PwL-ANN)and enhanced Piece-wise Linear Artificial Neural Network(enhanced PwL-ANN)*** PwL-ANN algorithm is a decomposition artificial neural network(ANN)rule extraction algorithm,and the enhanced PwL-ANN algorithm improves upon the PwL-ANN algorithm and extracts multiple linear regression equations from a trained ANN model by approximating the hidden sigmoid activation functions using N-piece linear *** doing so,the algorithm provides interpretable models from the originally trained opaque ANN models.A detailed application case study illustrates how the generated enhanced-PwL-ANN models can provide understandable IF-ThEN rules about a problem *** of the results generated by the two versions of the PwL-ANN algorithm showed that in comparison to the PwL-ANN models,the enhanced-PwL-ANN models support improved fidelities to the originally trained ANN *** results also showed that more concise rule sets could be generated using the enhanced-PwL-ANN *** a more simplified set of rules is desired,the enhanced-PwL-ANN algorithm can be combined with the decision tree *** application of the algorithms to domains related to petroleum engineering can help enhance understanding of the problems.

关键词： Artificial neural networks Rule extraction Regression problem Algorithm design

Neuroinflammation as a therapeutic target in huntington's disease

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Neural Regeneration Research 2025年第3期20卷 817-818页

作者： Andrea Kwakowsky Thulani h.Palpagama Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George huntington presented his essay “On Chorea” to the Meigs and Mason Academy of Medicine and, in doing so, detailed a disease that would later bear his name. huntington's disease(hD) is a genetic, neurodegenerative disease that manifests as the loss of motor control,cognitive impairment,and mood and psychiatric changes in paents.

关键词： huntington inflammation Medicine

Glial response in the midcingulate cortex in huntington’s disease

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Neural Regeneration Research 2025年第1期20卷 207-208页

作者： Thulani h.Palpagama Andrea Kwakowsky Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CenterUniversity of GalwayGalwayIreland

huntington’s disease(hD)is a genetic disease characterized by the progressive degeneration of the striatum and *** can present with a variety of symptoms that can broadly be classified into motor symptoms,inclusive of choreatic movements and rigidity,mood and psychiatric symptoms,such as depression and apathy,and cognitive symptoms,such as cognitive *** causal mutation underlying hD results from an expansion of a CAG repeat sequence on the IT15 gene,resulting in the formation and accumulation of a mutant huntingtin protein.

关键词： huntington degeneration cortex

Comparative chemical sensor for detection of chromium(Ⅵ) in aqueous solution

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Optoelectronics Letters 2025年第1期21卷 21-27页

作者： Sura h.AL-REKABI A.A.ALwAhIB Electrical Technique Department Al Suwayrah Technical Institute Middle Technical University Laser and Optoelectronics Department University of Technology-Iraq

A process for purifying aqueous solutions containing heavy and toxic metals such as chromium（Cr） has been investigated. One of the extremely harmful pollutants in rivers and seawater is the heavy metal ions due to their direct impacts on human, animals and plants are hexavalent Cr（Ⅵ）. Consequently, highly sensitive sensor to detect Cr is essential. Surface plasmon resonance（SPR） technique has attracted huge research interest in detecting heavy metals specifically. In this study, three types of prism-based SPR sensor, gold（Au）/silver（Ag）, Au/polyaniline（PANI） and Au/titanium dioxide（TiO2） nanostructured films, are investigated as potential sensing material to detect the presence of Cr（Ⅵ） ions in water. The base Au layer with thickness of 48.3 nm is deposited on a glass slide for all sensors. For Au/Ag, Au/PANI nanofibers and Au/TiO2sensor films, the Cr（Ⅵ） concentration is varied from 1 ppm to 15 ppm with sensitivity of 0.270 °ppm-1, 0.082 °ppm-1and 0.039 °ppm-1, respectively. Based on these results, the Au/PANI nanofibers are the most sensitive to Cr（Ⅵ） among the tested sensing materials.

关键词： Titanium dioxide