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政府补贴下供应链成员合作推广碳标签产品策略研究

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黑龙江环境通报 2025年第1期38卷 158-160页

作者：刘怡馨陈雨薇南京信息工程大学南京210044

由于全球气候加速变暖,各国和组织纷纷推出碳标签政策,以积极应对全球气候变暖的挑战。碳标签作为识别产品全生命周期中温室气体排放的方法,已成为指导消费者和企业在生活和生产决策中选择低碳方式的关键工具。因此,碳标签产品的推广至... 详细信息

由于全球气候加速变暖,各国和组织纷纷推出碳标签政策,以积极应对全球气候变暖的挑战。碳标签作为识别产品全生命周期中温室气体排放的方法,已成为指导消费者和企业在生活和生产决策中选择低碳方式的关键工具。因此,碳标签产品的推广至关重要,有助于引导绿色消费,实现低碳生活方式。本文主要研究了在政府补贴策略下供应链成员推广碳标签产品时的策略行为,旨在探讨供应链成员推动碳标签产品的策略与效果,为各成员提供更具体、更深入的指导和启示。

关键词：碳标签产品推广政府补贴供应链成员

A Novel Universal Steganalysis Algorithm Based on the IQM and the SRM

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Computers, Materials & Continua 2018年第8期56卷 261-272页

作者： Yu Yang yuwei chen Yuling chen Wei Bi Information Security Center Beijing University of Posts and TelecommunicationsBeijing100876China Guizhou Provincial Key Laboratory of Public Big Data Guizhou UniversityGuiyangGuizhou550025China SeeleTech Corporation San Francisco94107USA Zsbatech Corporation Beijing100088China

The state-of-the-art universal steganalysis method,spatial rich model(SRM),and the steganalysis method using image quality metrics(IQM)are both based on image residuals,while they use 34671 and 10 features *** paper proposes a novel steganalysis scheme that combines their advantages in two ***,filters used in the IQM are designed according to the models of the SRM owning to their strong abilities for detecting the content adaptive steganographic *** addition,a total variant(TV)filter is also used due to its good performance of preserving image edge properties during ***,due to each type of these filters having own advantages,the multiple filters are used simultaneously and the features extracted from their outputs are combined *** whole steganalysis procedure is removing steganographic noise using those filters,then measuring the distances between images and their filtered version with the image quality metrics,and last feeding these metrics as features to build a steganalyzer using either an ensemble classifier or a support vector *** scheme can work in two modes,the single filter mode using 9 features,and the multi-filter mode using 639 *** compared the performance of the proposed method,the SRM and the *** maxSRMd2 is the improved version of the *** simulated results show that the proposed method that worked in the multi-filter mode was about 10%more accurate than the SRM and maxSRMd2 when the data were globally normalized,and had similar performance with the SRM and maxSRMd2 when the data were locally normalized.

关键词： Image steganalysis IQM,SRM total variation universal image steganalysis

An Efficient Steganalysis Model Based on Multi-Scale LTP and Derivative Filters

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Computers, Materials & Continua 2020年第3期62卷 1259-1271页

作者： yuwei chen Yuling chen Yu Yang Xinda Hao Ning Wang Guizhou University Guizhou Provincial Key Laboratory of Public Big DataGuiyang550025China Information Security Center Beijing University of Posts and TelecommunicationsBeijing100876China

Local binary pattern(LBP)is one of the most advanced image classification recognition operators and is commonly used in texture detection *** indicates that LBP also has a good application prospect in ***,the existing LBP-based steganalysis algorithms are only capable to detect the least significant bit(LSB)and the least significant bit matching(LSBM)*** solve this problem,this paper proposes a steganalysis model called msdeLTP,which is based on multi-scale local ternary patterns(LTP)and derivative *** main characteristics of the msdeLTP are as follows:First,to reduce the interference of image content on features,the msdeLTP uses derivative filters to acquire residual images on which subsequent operations are ***,instead of LBP features,LTP features are extracted considering that the LTP feature can exhibit multiple variations in the relationship of adjacent ***,LTP features with multiple scales and modes are combined to show the relationship of neighbor pixels within different radius and along different *** and simulation show that the msdeLTP uses only 2592-dimensional features and has similar detection accuracy as the spatial rich model(SRM)at the same time,showing the high steganalysis efficiency of the method.

关键词： Image steganalysis LTP multi-scale image residuals

Effect of hydrological variability on diatom distribution in Poyang Lake, China

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Chinese Journal of Oceanology and Limnology 2017年第1期35卷 174-184页

作者： QIAN Kuimei LIU Xia chen yuwei Poyang Lake LaboratoryJbr Wetland Ecosystem Research State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China College of Environmental Engineering Xuzhou institute of Technology Xuzhou 221111 China

Poyang Lake is the largest freshwater lake in China, and it has a seasonal flooding cycle that significantly changes the water level every year. The aim of this paper was to explain how these hydrological changes influence diatom populations in Poyang Lake. The yearly hydrological cycle can be divided into 4 phases: low water-level phase, increasing water-level phase, high water-level phase and decreasing waterlevel phase. Variations in the abundance of planktonic diatoms were studied using quarterly monitoring data collected from January 2009 to October 2013. Generally, diatoms were dominant in Poyang Lake and accounted for more than 50% of the total phytoplankton biomass except in July 2009(26%) and January 2012(35%). Aulacoseira granulata and Surirella robusta were the predominant species in all four phases, and they accounted for 25.02% to 56.89% and 5.07% to 14.78% of the total phytoplankton biomass, respectively. A redundancy analysis(RDA) showed that changes in physico-chemical parameter were related to the water level, and changes in diatom biomass were related to nitrite levels and p H. These results indicate that changes in environmental parameters related to both seasonal variations and water-level fluctuations caused variations in diatom biomass and community composition in Poyang Lake. Furthermore, extreme hydrological events can have different influences on the diatom community composition in the main channel and lentic regions. This research provides data on the diatom variations in Poyang Lake and will be useful for establishing biological indicators of environmental change and protecting Poyang Lake in the future.

关键词： diatom phytoplankton succession water-level changes Poyang Lake

In situ Hydrothermal Oxidation of Ternary FeCoNi Alloy Electrode for Overall Water Splitting

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Energy & Environmental Materials 2024年第2期7卷 161-170页

作者： yuwei chen Lixia Yang Chao Li Yuqiu Wu Xiao Lν Hairen Wang Jun'e Qu Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Faculty of Material science and Chemistry China University of GeosciencesWuhan 430074China

Exploring noble metal-free catalyst materials for high efficient electrochemical water splitting to produce hydrogen is strongly desired for renewable energy *** this article,a novel bifunctional catalytic electrode of insitu-grown type for alkaline water splitting based on FeCoNi alloy substrate has been successfully prepared via a facile one-step hydrothermal oxidation route in an alkaline hydrogen peroxide *** shows that the matrix alloy with the atom ratio 4∶3∶3 of Fe∶Co∶Ni can obtain the best catalytic performance when hydrothermally treated at 180℃for 18 h in the solution containing 1.8 M hydrogen peroxide and 3.6 M sodium *** as-prepared Fe_(0.4)Co_(0.3)Ni_(0.3)-1.8 electrode exhibits small overpotentials of only 184 and 175 mV at electrolysis current density of 10 mA cm^(-2)for alkaline OER and HER processes,*** overall water splitting at electrolysis current density of 10 mA cm^(-2)can be stably delivered at a low cell voltage of 1.62 *** characteristics including the large specific surface area,the high surface nickel content,the abundant catalyst species,the balanced distribution between bivalent and trivalent metal ions,and the strong binding of in-situ naturally growed catalytic layer to matrix are responsible for the prominent catalytic performance of the Fe_(0.4)Co_(0.3)Ni_(0.3)-1.8 electrode,which can act as a possible replacement for expensive noble metal-based materials.

关键词： alkaline water electrolysis bifunctional electrocatalyst FeCoNi alloy hydrothermal oxidation in-situ growing

Potential influence of water level changes on energy flows in a lake food web

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Chinese Science Bulletin 2011年第26期56卷 2794-2802页

作者： WANG YuYu YU XiuBo LI WenHua XU Jun chen yuwei FAN Na Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Donghu Experimental Station of Lake Ecosystems State Key Laboratory of Freshwater Ecology and Biotechnology of China Institute of Hydro- biology Chinese Academy of Sciences Wuhan 430072 China Institute of Ecology Lund University Ecology Building SE-223 62 Lund Sweden Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 China

Large seasonal water-level fluctuations may influence isotopic signatures of primary producers and the types and amounts of these potential food sources accessible to aquatic fauna of Poyang Lake,the largest freshwater lake in *** this study,the isotopic signatures of primary producers and consumers were determined,stable carbon and nitrogen isotope analysis and mixing models were combined to investigate the influence of water levels on the diet and isotopic composition of Poyang Lake fish and *** potential food sources (seston,benthic organic matter,aquatic macrophytes,attached algae,and terrestrial plants),4 species of invertebrates,and 10 species of fish were collected from the lake area during dry and wet seasons between January 2009 and April *** δ 13C values of invertebrates and most fish were within the range of δ 13C values of the potential food sources for both *** δ 13C values of invertebrates and most fish were lower in the dry season than in the wet season,whereas the δ 15N values exhibited different patterns for different *** models indicated that the most important food sources for common lake fauna were seston in the dry season and aquatic macrophytes and terrestrial plants in the wet *** fauna were more omnivorous in the wet season than in the dry *** food web dynamics of Poyang Lake are strongly influenced by changes in the abundance and accessibility of different basal food sources that occur because of seasonal flood *** trophic links within the aquatic communities of Poyang Lake are modified by water-level fluctuations.

关键词：水位变化食物网无脊椎动物食物来源同位素特征流量能量水生动物

A writable lithium metal ink

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Science China Chemistry 2020年第10期63卷 1483-1489页

作者： Wangyan Wu Jian Duan Jiayun Wen yuwei chen Xuyang Liu Liqiang Huang Zhengfeng Wang Shengyuan Deng Yunhui Huang Wei Luo Institute of New Energy for Vehicles School of Materials Science and EngineeringTongji UniversityShanghai 201804China

The recent revival of Li metal anodes(LMA)leads to a renewed interest in LMA as the ultimate choice for rechargeable lithium batteries towards high energy ***,multiple challenges stand in the way of using LMA,of which high reactivity,dendrite growth,the difficulty of fabricating Li thin foils,and the flammability of organic liquid electrolytes are ***,a writable Li metal ink(LMI)prepared by introducing biomass-derived carbon particles into molten Li is *** to the significantly decreased surface tension,LMI is able to directly write on copper foils or other substrates that ultrathin Li foils with a remarkably small thickness(<10μm)can be *** versatility of LMI is further demonstrated in addressing the interface issue between LMA and garnet-type solid-state electrolytes,where directly writing LMI on the garnet offers a perfect contact and enables an extremely low interfacial resistance of 6Ωcm^2,in sharp contrast to 939Ωcm^2 between the pure Li and the *** to the successful partnership with non-flammable solid-state electrolytes,ink-based technology may have a chance to bring us very close to the use of solid-state lithium metal batteries(SSLMBs)with high safety and high energy density.

关键词： lithium metal ink surface tension solid-state batteries interface controllable thickness

A practical method utilizing multi-spectral LiDAR to aid points cloud matching in SLAM

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Satellite Navigation 2020年第1期1卷 317-327页

作者： Changhui Jiang yuwei chen Wenxin Tian Ziyi Feng Wei Li Chunchen Zhou Hui Shao Eetu Puttonen Juha Hyyppä Department of Remote Sensing and Photogrammetry Finnish Geospatial Research Institute(FGI)02430 MasalaFinland Interdisciplinary Division of Aeronautical and Aviation Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina Key Laboratory of Quantitative Remote Sensing Information Technology Chinese Academy of Sciences(CAS)Beijing 100094China School of Electrical Engineering Aalto University02150 EspooFinland The School of Electronic and Information Engineering Anhui Jianzhu UniversityHefei 230601China

Light Detection and Ranging(LiDAR)sensors are popular in Simultaneous Localization and Mapping(SLAM)owing to their capability of obtaining ranging information *** have attempted to use the intensity information that accompanies each range measurement to enhance LiDAR SLAM positioning ***,before employing LiDAR intensities in SLAM,a calibration operation is usually carried out so that the intensity is independent of the incident angle and *** range is determined from the laser beam transmitting ***,the key to using LiDAR intensities in SLAM is to obtain the incident angle between the laser beam and target *** a complex environment,it is difficult to obtain the incident angle *** procedure also complicates the data processing in SLAM and as a result,further application of the LiDAR intensity in SLAM is *** by this problem,in the present study,we propose a Hyperspectral LiDAR(HSL)-based-intensity calibration-free method to aid point cloud matching in *** employed in this study can obtain an eight-channel range accompanied by corresponding intensity *** to the design of the laser,the eight-channel range and intensity were collected with the same incident angle and *** to the laser beam radiation model,the ratio values between two randomly selected channels’intensities at an identical target are independent of the range information and incident *** test the proposed method,the HSL was employed to scan a wall with different coloured papers pasted on it(white,red,yellow,pink,and green)at four distinct positions along a corridor(with an interval of 60 cm in between two consecutive positions).Then,a ratio value vector was constructed for each *** ratio value vectors between consecutive laser scans were employed to match the point cloud.A classic Iterative Closest Point(ICP)algorithm was employed to estimate the HSL motion using the range information from t

关键词： SLAM Laser intensity LiDAR Calibration

Application of Semantic Core Words in Meaning-Match Listening

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校园英语 2019年第18期 188-189页

作者： chen yuwei chengdu Institute Sichuan International Studies University

"Semantic Core Words", as the combination of "Semantic Mark Words" and "Semantic Key Words", plays an important role in the meaning-match listening. They help the listener generally and specifically locate where the missing part is and try to fill the blank with the correct and accurate words or phrases that are required. This paper takes an extract from BEC exercise "Airspeed-Notes on Presentation by Chief Executive" as an instance to exemplify how to use semantic core words to do the meaning match, which aims to help those to have a better understanding of the usage of"Semantic Core Words", accordingly grasping the listening skill in meaning-match listening.

关键词： Semantic Core Words Meaning-Match Listening Application