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Digitizing Dunhuang Cultural Heritage:A User Evaluation of mogao Cave Panorama Digital Library

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Journal of Data and Information Science 2017年第3期2卷 49-67页

作者： Xiao Hu Eric m.y.ho Chen Qiao Faculty of Education The University of Hong Kong

Purpose： This study is a user evaluation on the usability of the mogao Cave Panorama Digital Library （DL）, aiming to measure its effectiveness from the users＇ perspective and to propose suggestions for improvement. Design/methodology/approach： Usability tests were conducted based on a framework of evaluation criteria and a set of information seeking tasks designed for the Dunhuang cultural heritage, and interviews were conducted for soliciting in-depth opinions from participants. Findings： The results of the usability tests indicate that the DL was more efficient in supporting simple information seeking tasks than those of higher-complexity levels. Statistical tests reveal that there were correlations among dimensions of usability criteria and user effectiveness measures. moreover, interview discourses exposed specific usability issues of the DL. Research limitations： This research is based on a relatively small sample size, resulting in a limited representativeness of user diversity. A larger sample size is needed for a systematic cross group comparison. Practical implications： This study evaluated the usability of the mogao Cave Panorama DL and proposed suggestions for its improvement for better experience. The results also provide a reference to other cultural heritage DLs with panorama functions. Originality/value： This study is one of the first evaluating cultural heritage DLs from the perspective of user experience. It provides methodological references for relevant studies： the evaluation framework, the designed information seeking tasks, and the interview questions can be adopted or adapted in evaluating other visually centric DLs of cultural heritage.

关键词： mogao Caves Cultural heritage Usability Dunhuang Panorama digital library

Deep Volatiles as the Key for Energy and Environments of the Four-Dimensional Earth System

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Engineering 2019年第3期5卷 393-394页

作者： ho-Kwang mao Craig m. Schiffries Center for High Pressure Science and Technology Advanced Research (HPSTAR) Shanghai 201203 China Geophysical Laboratory Carnegie Institution for Science Washington DC 20015 USA

Carbon, hydrogen, oxygen, nitrogen, sulfur, and their compounds are volatile components that dominate the thin and fragile atmosphere, hydrosphere, and biosphere on Earth’s habitable surface. however, the vast majority of these volatiles are hidden in the deep interior, where the high pressure–temperature conditions drastically and categorically alter the physics and chemistry of the volatiles. Like the bloodstream of an organism, the circulations and interactions of volatiles in the deep Earth modulate climate, resources, energy, natural hazards, and other factors that define the Earth as a unique living and changing planet.

关键词： Four-Dimensional Earth System Deep Volatiles

metabolic programming in dendritic cells tailors immune responses and homeostasis

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Cellular & molecular Immunology 2022年第3期19卷 370-383页

作者： Sofie Hedlund møller Limei Wang Ping-Chih ho Department of Fundamental Oncology University of LausanneLausanneSwitzerland Ludwig Institute for Cancer Research University of LausanneEpalingesSwitzerland

It is being increasingly acknowledged that immune cells depend on certain metabolic traits to perform their functions and that the extracellular environment can influence cell metabolism and vice *** cell(DC)subsets traffic through highly diverse environments from the bone marrow,where they develop,to the various peripheral tissues,where they differentiate and capture antigens,before they migrate to the lymph node to present antigens and prime T *** is plausible that DC subsets modulate their stimulatory abilities in response to unique metabolic *** metabolic requirements of DCs are just recently being discovered,and subset-and context-specific metabolic phenotypes in DCs are highly intertwined with DC *** this review,we present the current knowledge on the intrinsic and extrinsic determinants of DC metabolism,how they regulate DC function with examples from tumor biology and in interaction with the microbiota,and discuss how this can be applied therapeutically.

关键词： Dendritic cells Immunometabolism homeostasis Tumor immunity microbiota

Turbulent flows over real heterogeneous urban surfaces:Wind tunnel experiments and Reynolds-averaged Navier-Stokes simulations

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Building Simulation 2021年第5期14卷 1345-1358页

作者： Wai-Chi Cheng Chun-ho Liu yat-Kiu ho Ziwei mo Zhangquan Wu Wenye Li Lilian y.L.Chan W.K.Kwan Hing Tuen yau School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster StudiesSun Yat-sen UniversityZhuhaiChina Southern marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiChina Department of mechanical Engineering The University of Hong KongHong KongChina Information Technology Services The University of Hong KongHong KongChina

Wind tunnel experiment and steady-state Reynolds-averaged Navier-Stokes(RANS)approaches are used to examine the urban boundary layer(UBL)development above Kowloon Peninsula,hong Kong Special Administrative Region(HKSAR).The detailed urban morphology is resolved by computational fluid dynamics(CFD)and is fabricated by 3D-printing(reduced scale)for wind tunnel *** from the majority existing results based on idealized,homogeneous urban geometries,it was found that the wind and turbulence in the UBL over downtown Kowloon are characterized by the wake behind several high-rise *** particular,local maxima of turbulence kinetic energy(TKE)and shear stress are found at the roof level of those high-rise *** the downstream region where the flows are already adjusted to the urban surfaces,the urban roughness sublayer(URSL)can be further divided into two layers based on the structures of the mixing length/m,effective drag Dx and dispersive *** the lower URSL(zm),lm is rather uniform,and the Reynolds stress and dispersive stress are *** the upper URSL(100 m z s 300 m),on the contrary,lm is peaked at the mid-height and the magnitude of dispersive stress is smaller than that of the Reynolds stress(<30%).The effective drag Dx is negligible in the upper URSL.

关键词： computational fluid dynamics(CFD) real urban morphology urban boundary layer(UBL) urban canopy model(UCm) wind tunnel experiments

Computational fluid dynamics simulation of the wind flow over an airport terminal building

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第6期11卷 389-401页

作者： Chun-ho LIU Dennis y.C.LEUNG Alex C.S.mAN P.W.CHAN Department of mechanical Engineering The University of Hong Kong hong Kong Observatory

Turbulence in the wake generated by wind flow over buildings or obstacles may produce complex flow patterns in downstream *** include the recirculating flow and wind deficit areas behind an airport terminal building and their potential impacts on the aircraft landing on nearby runways.A computational fluid dynamics(CFD) simulation of the wind flow over an airport terminal building was performed in this study of the effect of the building wake on landing *** normal meteorological conditions,the studied airport terminal building causes limited effects on landing aircraft because most of the aircraft have already landed before entering the turbulent wake *** simulating the approach of a tropical cyclone,additional CFD sensitivity tests were performed to study the impacts of building wake under extreme meteorological *** was found that,in a narrow range of prevalent wind directions with wind speeds larger than a certain threshold value,a substantial drop in wind speed(>3.6 m/s) along the glide path of aircraft was observed in the building *** CFD results also showed that under the most critical situation,a drop in wind speed as large as 6.4 m/s occurred right at the touchdown point of landing aircraft on the runway,an effect which may have a significant impact on aircraft *** study indicated that a comprehensive analysis of the potential impacts of building wake on aircraft operations should be carried out for airport terminals and associated buildings in airfields to ensure safe aviation operation under all meteorological conditions and to facilitate implementation of precautionary measures.

关键词： Aviation safety Building aerodynamics Computational fluid dynamics (CFD) k-e turbulence model Tropicalcyclone

Effects of dispersoid preforming via multistep sintering of oxide dispersion-strengthened CoCrFemnNi high-entropy alloy

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Journal of materials Science & Technology 2023年第9期140卷 187-200页

作者： SeungHyeok Chung Ji ho Shin ho Jin Ryu Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Central Research Institute Korea Hydro and Nuclear Power Co.Ltd.(KHNP)Daejeon 34101Republic of Korea

Dispersoid formation and microstructural evolution in an oxide dispersion-strengthened CoCrFemnNi high-entropy alloy(HEA)using a newly designed multistep sintering process are *** proposed multistep sintering consists of a dispersoid preforming heat treatment of as-milled 0.1 wt%y_(2)O_(3)-CoCrFemnNi high-entropy alloy powders at 800℃,followed by sintering at 800–1000℃ under uniaxial *** the conventional single-step sintered bulk,the coarsened BCC y_(2)O_(3)dispersoids mainly form with an incoherent interface with the HEA *** contrast,finer FCC y_(2)O_(3)dispersoids,an atypical form of y_(2)O_(3),are formed in the matrix region after multistep *** of FCC y_(2)O_(3)disper-soids is initiated on the favorable facet,the{111}plane of the austenitic matrix,with the formation of a semi-coherent interface with the matrix during the dispersoid preforming heat treatment and it maintains its refined size even after *** is found that dispersoid preforming prior to sintering appears promising to control the finer dispersoid formation and refined grain structure.

关键词： Oxide dispersion strengthening High-Entropy alloy multistep sintering Dispersoid preforming microstructure evolution Interfacial structure

Growth of the tropical Pinus kesiya as influenced by climate and nutrient availability along an elevational gradient

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Journal of Plant Ecology 2020年第1期13卷 97-106页

作者： Le Tuan ho Raimund Schneider Frank m.Thomas Department of Geobotany University of TrierFaculty of Regional and Environmental SciencesBehringstraße 2154296 TrierGermany Department of Forest Resources management Faculty of ForestryNong Lam University HCMCThu Duc DistrictHo Chi Minh CityVietnam Department of Soil Science University of TrierFaculty of Regional and Environmental SciencesBehringstraße 2154296 TrierGermany

Aims In contrast to temperate regions,the reasons for growth reductions of individual tree species along elevational gradients in tropical mountain ranges are poorly known,especially for tropical *** aimed at testing whether climatic or edaphic conditions are responsible for the reduced growth of Pinus kesiya,a widely distributed pine species of southern and south-eastern Asia,at higher *** We analysed the stem diameter increment and the isotope discrimination against ^(13)C(△^(13)C)in tree rings of *** along an elevational gradient of~900 to~2000 m *** the mountain ranges of South-Central Vietnam,and related growth to△^(13)C and to climatic and edaphic *** findings We found no consistent correlation patterns between the basal area increment(BAI)of the trees and temperature or *** contrast,across the elevational gradient,we obtained significantly negative correlations of BAI with△^(13)C and with the C/N ratios and theδ^(15)N signature of the upper mineral *** was positively correlated with the concentrations of plant-available phosphorus(P_(a))and of“base”cations(calcium,magnesium,potassium)in the *** conclude that lower temperatures at higher elevations exert an indirect effect on tree growth by inducing higher C/N ratios and by reducing the rate of nitrogen(N)and P mineralization,which may be further hampered by lower concentrations of“base”cations(upon enhanced leaching by precipitation)and a negative feedback from low availability of mineralized N and P at higher *** results may be transferable to the uppermost growth limit of *** and to other montane regions of the species’occurrence.

关键词： dendroecology pine pointer year soil nutrient stable isotope

An effective communication and computation model based on a hybridgraph-deeplearning approach for SIoT

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Digital Communications and Networks 2022年第6期8卷 900-910页

作者： m.S.mekala Gautam Srivastava Ju H.Park ho-youl Jung Department of Information and Communication Engineering Yeungnam UniversityGyeongsan38544South Korea RLRC LAb for Autonomous Vehicle Parts and materials Innovation Yeungnam UniversityGyeongsan38544South Korea Department of math and Computer Science Brandon UniversityBrandonCanada Department of Electrical Engineering Yeungnam UniversityGyeongsanSouth Korea Research Centre for Interneural Computing China Medical UniversityTaichungTaiwanChina

Social Edge Service(SES)is an emerging mechanism in the Social Internet of Things(SIoT)orchestration for effective user-centric reliable communication and *** services are affected by active and/or passive attacks such as replay attacks,message tampering because of sharing the same spectrum,as well as inadequate trust measurement methods among intelligent devices(roadside units,mobile edge devices,servers)during computing and *** issues lead to computation and communication overhead of servers and computation *** address this issue,we propose the HybridgrAph-Deep-learning(HAD)approach in two stages for secure communication and ***,the Adaptive Trust Weight(ATW)model with relation-based feedback fusion analysis to estimate the fitness-priority of every node based on directed graph theory to detect malicious nodes and reduce computation and communication ***,a Quotient User-centric Coeval-Learning(QUCL)mechanism to formulate secure channel selection,and Nash equilibrium method for optimizing the communication to share data over edge *** simulation results confirm that our proposed approach has achieved effective communication and computation performance,and enhanced Social Edge Services(SES)reliability than state-of-the-art approaches.

关键词： Edge computing Adaptive trust weight(ATW)model Quotient user-centric coeval-learning(QUCL)mechanism Deep learning Service reliability

Comments on “Adsorption of 2-mercaptobenzothiazole from aqueous solution by organo-bentonite” by P. Jing, m.H. hou,P. Zhao, X.y. Tang, H.F. Wan

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Journal of Environmental Sciences 2014年第12期26卷 2571-2572页

作者： yuhshan ho Water Research Centre Asia University

Recently, ling et al. （2013） published the paper entitled as above. In Section 2.3, Adsorption kinetics of mBT, authors noticed that ＂The pseudo first-order kinetic model （Eq. （1）） and the pseudo second-order k... 详细信息

关键词： by P Comments on Adsorption of 2-mercaptobenzothiazole from aqueous solution by organo-bentonite H.F Jing m.H Tang Wan X.y Zhao