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First wetland mapping at 10-m spatial resolution in South America using multi-source and multi-feature remote sensing data

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Science China Earth Sciences 2024年

作者： Weiwei SUN Gang YANG Yuling HUANG Dehua MAO Ke HUANG Lin ZHU Xiangchao MENG Tian FENG Chao CHEN Yong GE Department of Geography and Spatial Information Techniques Ningbo University State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences & Natural Resources ResearchChinese Academy of Sciences Natural Resources and planning Bureau Shanghai Pudong New District Key Laboratory of Wetland Ecology and Environment Northeast Institute of Geography and Agroecology Chinese Academy of Sciences faculty of Electrical Engineering and Computer Science Ningbo University School of Geography Science and Geomatics Engineering Suzhou University of Science and Technology

Wetland degradation has been accelerating in recent years *** information on the geographic distribution and categories of wetlands is essential for their conservation and *** being the world′s fourth largest continent,South America has limited research on wetland mapping,and there is currently no available map that provides comprehensive information on wetland distribution and categories in the *** address this issue,we used Sentinel-1,Sentinel-2 and SRTM data,developed a sample collection method and a wetland mapping method with a collection of multi-source features such as optical features,polarization features and shape features for South American *** produced a 10-m resolution wetland map based on the Google Earth Engine （GEE） *** Level-1 wetland cover map accurately captured six wetland sub-categories with an overall accuracy of 96.24%and a kappa coefficient of 0.8649,while our Level-2 water cover map included five sub-categories with an overall accuracy of 97.23%and a kappa coefficient *** results show that the total area of existing wetlands in South America is approximately 1,737,000 km2,which is6.8%of the total land *** the ten wetland categories,shallow sea had the largest area （960,527.4 km2）,while aquaculture ponds had the smallest area 1513.6 *** had the second largest area （306,240.1 km2）.Brazil,Argentina,Venezuela,Bolivia,and Colombia were found to have the largest wetland areas,with Brazil and Colombia having the most diverse wetland *** product can serve as baseline data for subsequent monitoring,management,and conservation of South American wetlands.

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Physiological and cognitive discontinuities:From mythical mediation to implicit discretization of architectural design tools

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Frontiers of Architectural Research 2023年第1期12卷 1-14页

作者： Damien Claeys Louvain Research Institute for Landscape ArchitectureBuilt Environment(LAB)and Faculty of ArchitectureArchitectural Engineering and Urban Planning(LOCI)Universite´catholique de Louvain(UCLouvain)BrusselsBelgium

In architectural design,representation tools are often compared according to their alleged effects on the creativity of ***,their mediating capacities are often mythicized,to such an extent that one might surmise the direct transmission of the mental images from the designer’s consciousness to an external *** this speculative essay,we demonstrate that the process of representation at work in architectural design originates from the designer’s consciousness natural cognitive ability,rather than from the use of a specific mediation tool between the designer and his environment,between the mentally constructed architectural project and its *** effects of any tool of representationdanalog or digitaldon our perceptual apparatus depend primarily on the cognitive mechanisms affecting the discontinuous flow of internal representations formed by our *** other words,we propose to shed a new light on these limitations through the heuristic modeling of an architectural project designer confronted with his own cognitive biases,and the limits of the representation *** the present essay,the discontinuities and uncertainties inherent to the processes of representation are reintegrate in the models.

关键词： architecture Design Representation Discretization Discontinuity Digital Analog Uncertainty

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General Optimal Trajectory planning:Enabling Autonomous Vehicles with the Principle of Least Action

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Engineering 2024年第2期33卷 63-76页

作者： Heye Huang Yicong Liu Jinxin Liu Qisong Yang Jianqiang Wang David Abbink Arkady Zgonnikov School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China Department of Cognitive Robotics Faculty of MechanicalMaritime and Materials Engineering(3mE)Delft University of TechnologyDelft 2628Netherlands Department of Software Technology Faculty of Electrical EngineeringMathematics and Computer ScienceDelft University of TechnologyDelft 2628Netherlands Xi’an Institute of High-Technology Xi’an 710051China

This study presents a general optimal trajectory planning(GOTP)framework for autonomous vehicles(AVs)that can effectively avoid obstacles and guide AVs to complete driving tasks safely and ***,we employ the fifth-order Bezier curve to generate and smooth the reference path along the road *** coordinates are then transformed to achieve the curvature continuity of the generated *** the road constraints and vehicle dynamics,limited polynomial candidate trajectories are generated and smoothed in a curvilinear coordinate ***,in selecting the optimal trajectory,we develop a unified and auto-tune objective function based on the principle of least action by employing AVs to simulate drivers’behavior and summarizing their manipulation characteristics of“seeking benefits and avoiding losses.”Finally,by integrating the idea of receding-horizon optimization,the proposed framework is achieved by considering dynamic multi-performance objectives and selecting trajectories that satisfy feasibility,optimality,and *** simulations and experiments are performed,and the results demonstrate the framework’s feasibility and effectiveness,which avoids both dynamic and static obstacles and applies to various scenarios with multi-source interactive traffic ***,we prove that the proposed method can guarantee real-time planning and safety requirements compared to drivers’manipulation.

关键词： Autonomous vehicle Trajectory planning Multi-performance objectives Principle of least action

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Numerical simulation of granular silicon growth and silicon fines formation process in polysilicon fluidized bed

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Particuology 2024年第4期87卷 74-86页

作者： Guangkai Gu Guoqiang Lv Wenhui Ma Shanlin Du Boqiang Fu faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province Kunming 650093China

Operating conditions strongly affect the yield and quality of polysilicon in a polysilicon fluidized *** this study,a new model of polysilicon fluidized bed was established using the Euler-Euler model coupled with population balance model(PBM),which was combined with fluid flow,heat,and mass transfer models,while considering the scavenging effect of silicon *** effects of different operating conditions on the deposition and formation rates of silicon fines were *** show that the model can correctly describe the particle growth process in the fluidized bed of *** silicon fines and the interphase velocity difference show"N"-and"M"-shaped distributions along the axial direction,*** particle temperature and concentration near the wall are higher than those in the central *** decomposition of silane in the bottom region of the bed is dominated by het-erogeneous *** scavenging of silicon fines occurs in the dilute-phase *** effects of operating conditions,*** gas temperature,silane composition,and gas velocity,on the reactor performance were also explored *** the inlet gas composition and velocity enhances the formation rates of solid silicon and *** the inlet gas temperature promotes the growth of solid silicon and inhibits the formation of silicon *** fluidization ratio,low inlet silane concentration,and high inlet gas temperature enhance the selectivity of silicon growth.

关键词： Polysilicon fluidized bed Particle growth Fines CFD Population balance model(PBM)

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Evaluation of the performance of demand control ventilation system for school buildings located in the hot climate of Saudi Arabia

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Building Simulation 2022年第6期15卷 1067-1082页

作者： Alaa Alaidroos Ayad Almaimani Moncef Krarti Ammar Dahlan Rahif Maddah Architectural Engineering Department King Abdulaziz UniversityRabighSaudi Arabia faculty of architecture and planning King Abdulaziz UniversityJeddahSaudi Arabia Building Systems Program University of Colorado BoulderBoulderCOUSA

The advantages of the demand control ventilation system(DCV)have been widely discussed in previous research ***,the literature has not addressed the benefits of DCV on controlling indoor CO_(2)concentration and minimizing cooling energy consumption for school buildings located in extremely hot ***,this paper contributes to the development of DCV and mechanical ventilation systems through a comprehensive evaluation of these systems to maintain acceptable indoor air quality(IAQ)while minimizing cooling energy demands for school buildings located in the harsh hot climate of Saudi *** evaluation is based on a calibrated whole-building energy model and validated IAQ predictions using field data obtained from a school case study in *** results of this research study confirm that hourly and sub-hourly monitoring of indoor CO_(2)concentration is required to ensure optimal design and operation of the ventilation systems in *** addition,the analyses indicate that a 13%increase in cooling energy end-use can result for any additional 0.1 students/m^(2)density increase in the ***,the energy penalties related to ventilation needs can be reduced by up to 25%using DCV instead of conventional mechanical ventilation systems for school buildings located in Saudi Arabia’s hot climate.

关键词： mechanical ventilation demand control ventilation(DCV) indoor air quality(IAQ) CO_(2)concentration energy efficiency school buildings

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Circularity-based decision-making framework for the integrated conservation of built heritage:the case of the Medina of Tunis

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Built Heritage 2023年第3期7卷 56-77页

作者： Yasmine Tira Handan Türkoğlu Department of Urban and Regional planning Faculty of ArchitectureIstanbul Technical UniversityTaşkışla Campus34367ŞişliIstanbulTurkey

Several factors overlap in making urban heritage conservation vulnerable in terms of long-term *** purpose of this study is to offer insights into the dynamic role that heritage governance plays in the current sustainability *** purpose is achieved by investigating the shift from a‘governing for culture’approach to a‘governing through culture’approach in heritage ***,a case is built for a circularity-based conservation strategy applicable to the governance of historic *** indicators of the circular governance approach are considered,and useful data are collected in comparative *** cross-matching relationship between the factors is then evaluated by employing the analytic hierarchy process(AHP)on the collected *** a test case,the conservation strategy of the Medina of Tunis is *** a more general conservation model,case-specific data are ***,the same framework is applied to compare the case-dependent and case-independent data to define an integrated conservation *** obtained results show that the knowledge and data exchange factor,carries the highest *** result translates into heritage-led urban regeneration through knowledge sharing and the effective redistribution of cultural activities in historic city centres.

关键词： Circular governance Integrated conservation Built heritage Analytic hierarchy process(AHP) Conservation model The Medina of Tunis historic city

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Location of Disaster Management Bases Using Spatial Analysis

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Journal of Systems Science and Systems Engineering 2024年第1期33卷 1-29页

作者： Hadi Nayyeri Sahar Zandi Mahmood Souri Department of Geomorphology Faculty of Natural ResourceUniversity of KurdistanSanandajKurdistanIran Department of Geography Sciences Kharazmi UniversityTehranIran Red Crescent Society of the Islamic Republic Employee of Iran HamedanIran

Pre-crisis management involves the optimal selection of relief and rescue centers to minimize *** is particularly vulnerable due to its location on the Alpine-Himalaya seismic belt,resulting in an average death rate six times higher than the global average during ***,selecting appropriate relief and rescue centers is crucial to Iran’s disaster *** selecting the placement of rescue centers,accessibility and the appropriateness of the land should be taken into account as well as the distance from high-risk *** location of these centers does not require any particular *** address this issue,a study was conducted utilizing GIS,artificial neural networks,fuzzy logic,and mathematical models to determine the optimal placement based on 12 indicators within two clusters:natural and *** examine the information layers of the initial stage,a spatial data repository concerning the variables impacting the placement of these centers was established using *** functions and algorithms such as Fuzzy Logic in IDRISI,TOPSIS,and VIKOR software,the layers were assessed for weightage before being *** study’s analysis of the models used revealed that the positioning priority limits of the areas differed across all four ***,the areas with high desirability varied to a greater extent:the fuzzy model varied by 9.3%,neural network by 12.4%,VIKOR by 4.5%,and TOPSIS by 16.2%.The variance in results can be attributed to the differing levels of risk acceptance and non-acceptance in each ***,the study yielded other significant findings such as the correlation between study area size and model ***,smaller study areas exhibited higher model *** research also demonstrated that both fuzzy and VIKOR models achieved greater *** a result,employing these models in crisis management planning,particularly in pre-crisis management for identifying rescue center lo

关键词： Crisis management GIS earthquake risk site selection

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Regenerating historical districts through tactical urbanism:A case study of Sarpol neighborhood in Isfahan Province,Iran

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Frontiers of Architectural Research 2023年第6期12卷 1234-1245页

作者： Mohammad Salehi Shima Taheri Amirhosein Shabani Department of Urban planning Najafabad BranchIslamic Azad UniversityNajafabadIran Department of architecture Isfahan(Khorasgan)BranchIslamic Azad UniversityIsfahanIran Department of architecture Faculty of EngineeringShahid Ashrafi Esfahani UniversityIsfahanIran Advancement in architecture and Urban planning Research Center Najafabad BranchIslamic Azad UniversityNajafabadIran

This paper examines historical urban fabrics’challenges regarding quality of life and visual disturbances despite their cultural and identity *** and socialoriented approaches considering social,economic,and cultural dimensions preserve and enhance these valuable *** urbanism,with its people-oriented approach,can address these *** study focused on Sarpol in Khomeinishahr County,Isfahan Province of *** city’s urban structure divides into two parts:despite its active social structure and valuable spaces,Sarpol is a historic neighborhood with significant *** followed Corbin and Strauss’s version of Grounded Theory in the qualitative research *** and snowball sampling methods were employed to select 21 participants from the Sarpol neighborhood for semi-structured *** analysis involved three stages of coding:open,axial,and *** themes included religious participation,identity,sustainable social bonds,indigenous dependence,and low environmental *** central issue identified was the crucial role of religious and cultural values as a driving force for tactical urbanism,which emerged as the most critical semantic domain related to the research problem.

关键词： Tactical urbanism Urban regeneration Historical fabrics Neighborhood Grounded theory Social-oriented approaches

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Leveraging Augmented Reality,Semantic-Segmentation,and VANETs for Enhanced Driver’s Safety Assistance

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Computers, Materials & Continua 2024年第1期78卷 1443-1460页

作者： Sitara Afzal Imran Ullah Khan Irfan Mehmood Jong Weon Lee Mixed Reality and Interaction Lab Department of SoftwareSejong UniversitySeoul05006Korea faculty of Engineering and Digital Technologies School of Computer ScienceAI and ElectronicsUniversity of BradfordBradfordUK

Overtaking is a crucial maneuver in road transportation that requires a clear view of the road ***,limited visibility of ahead vehicles can often make it challenging for drivers to assess the safety of overtaking maneuvers,leading to accidents and *** this paper,we consider atrous convolution,a powerful tool for explicitly adjusting the field-of-view of a filter as well as controlling the resolution of feature responses generated by Deep Convolutional Neural Networks in the context of semantic image *** article explores the potential of seeing-through vehicles as a solution to enhance overtaking ***-through vehicles leverage advanced technologies such as cameras,sensors,and displays to provide drivers with a real-time view of the vehicle ahead,including the areas hidden from their direct line of *** address the problems of safe passing and occlusion by huge vehicles,we designed a see-through vehicle system in this study,we employed a windshield display in the back car together with cameras in both *** server within the back car was used to segment the car,and the segmented portion of the car displayed the video from the front *** see-through system improves the driver’s field of vision and helps him change lanes,cross a large car that is blocking their view,and safely overtake other *** network was trained and tested on the Cityscape dataset using semantic *** transparent technique will instruct the driver on the concealed traffic situation that the front vehicle has *** our findings,we have achieved 97.1% *** article also discusses the challenges and opportunities of implementing see-through vehicles in real-world scenarios,including technical,regulatory,and user acceptance factors.

关键词： Overtaking safety augmented reality VANET V2V deep learning

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Efficient computation of Hash Hirschberg protein alignment utilizing hyper threading multi-core sharing technology

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CAAI Transactions on Intelligence Technology 2022年第2期7卷 278-291页

作者： Muhannad Abu-Hashem Adnan Gutub Department of Geomatics Faculty of Architecture and PlanningKing Abdulaziz UniversityJeddahSaudi Arabia Department of Computer Engineering College of Computer&Information SystemsUmm Al-Qura UniversityMakkahSaudi Arabia

Due to current technology enhancement,molecular databases have exponentially grown requesting faster efficient methods that can handle these amounts of huge ***-fore,Multi-processing CPUs technology can be used including physical and logical processors(Hyper Threading)to significantly increase the performance of ***,sequence comparison and pairwise alignment were both found contributing significantly in calculating the resemblance between sequences for constructing optimal *** research used the Hash Table-NGram-Hirschberg(HT-NGH)algo-rithm to represent this pairwise alignment utilizing hashing *** authors propose using parallel shared memory architecture via Hyper Threading to improve the performance of molecular dataset protein pairwise *** proposed parallel hyper threading method targeted the transformation of the HT-NGH on the datasets decomposition for sequence level efficient utilization within the processing units,that is,reducing idle processing unit *** authors combined hyper threading within the multicore architecture processing on shared memory utilization remarking perfor-mance of 24.8%average speed up to 34.4%as the highest boosting *** benefit of this work improvement is shown preserving acceptable accuracy,that is,reaching 2.08,2.88,and 3.87 boost-up as well as the efficiency of 1.04,0.96,and 0.97,using 2,3,and 4 cores,respectively,as attractive remarkable results.

关键词： computational biology high-performance computing Hyper Threading pairwise sequence alignment parallel design sequence alignment shared-memory

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