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1消费者对可追溯食品属性的偏好和支付意愿:猪肉的案例显示文摘本文基于中国猪肉全程供应链体系的主要环节的安全风险,界定了猪肉的可追溯信息,并以商务部肉菜流通追溯体系建设七个试点城市的1489个消费者为调查对象,运用选择实验(choice experiment)方法,借助混合Logit(mixedLogit)模型和潜在类别模型(1atentclassmodeling)研究了消费者对可追溯猪肉属性的偏好及支付意愿。研究结论显示,不同类别的消费者对可追溯猪肉属性的偏好与支付意愿存在较大差异。消费者对质量认证属性最为重视,其次为外观和可追溯信息;相对于政府认证,消费者更偏好于国内第三方机构认证;性别、年龄、受教育程度与收入水平显著影响消费者对可追溯猪肉属性的偏好。吴林海 王淑娴 Wuyang Hu 2014中国农村经济2014,,8:53
2可追溯猪肉原产地属性与可追溯信息属性的消费者偏好分析显示文摘本文以中国江苏省无锡市110位消费者为样本,采用真实选择实验的方法,借助随机参数与潜在类别模型研究了消费者对可追溯猪肉属性及其层次的偏好。结果表明,消费者对可追溯信息真实性的政府认证属性支付意愿最高,对原产地属性的支付意愿高于对可追溯信息属性的支付意愿,且追溯到屠宰加工环节的可追溯信息属性与本地产属性之间存在替代关系,与外地产属性之间存在互补关系。因此,尽管消费者群体存在异质性,但不同类别消费者对可追溯猪肉的本地产属性均具有一定的支付意愿。故在中国可追溯食品市场建设初期,在可追溯食品属性体系中设置原产地属性具有积极意义。吴林海 秦沙沙 朱淀 李清光 Wuyang Hu 2015中国农村经济2015,,6:38
3生猪养殖户病死猪处理影响因素及其行为选择——基于仿真实验的方法显示文摘本文以江苏省阜宁县654位生猪养殖户为案例,借鉴行为概率的定义与内涵,选取影响生猪养殖户病死猪处理的影响因素,采用仿真实验的方法,模拟影响因素在生猪养殖户病死猪处理行为选择的过程发挥的作用。研究结果显示,养殖年限、养殖规模、政府政策与相关法律法规认知、生猪疫情与防疫认知等因素的变化均会导致生猪养殖户病死猪处理行为选择的改变,并且某些因素的改变与养殖户病死猪处理行为选择之间并非简单的线性关系。本文的研究意义,就在于根据仿真实验的分析结果为政府从源头上治理病死猪流入猪肉市场的乱象提供了决策参考。吴林海 许国艳 HU Wuyang 2015南京农业大学学报(社会科学版)2015,15,2:32
4Geothermal data analysis at the high-temperature hydrothermal area in Western Sichuan显示文摘The western Sichuan hydrothermal area is located at the northeastern margin of the eastern syntaxis of the Qinghai-Tibet Plateau, which is also the eastern end of the Mediterranean-Himalayan geothermal activity zone. There are 248 warm or hot springs in this area, and 11 have temperatures beyond the local boiling temperature. Most of these hot springs are distributed along the Jinshajiang, Dege-Xiangcheng, Ganzi-Litang, and Xianshuihe faults, forming a NW-SE hydrothermal belt. A geothermal analysis of this high-temperature hydrothermal area is an important basis for understanding the deep geodynamic process of the eastern syntaxis of the Qinghai-Tibet Plateau. In addition, this study offers an a priori view to utilize geothermal resources, which is important in both scientific research and application. We use gravity, magnetic, seismic, and helium isotope data to analyze the crust-mantle heat flow ratio and deep geothermal structure. The results show that the background terrestrial heat flow descends from southwest to northeast. The crustal heat ratio is not more than 60%. The high temperature hydrothermal active is related to crustal dynamics processes. Along the Batang-Litang-Kangding line, the Moho depth increases eastward, which is consistent with the changing Qc/Qm(crustal/mantle heat flow) ratio trend. The geoid in the hydrothermal zone is 4–6 km higher than the surroundings, forming a local 'platform'. The NW-SE striking local tensile stress zone and uplift structure in the upper and middle crust corresponds with the surface hydrothermal active zone. There is an average Curie Point Depth(CPD) of 19.5–22.5 km in Batang, Litang, and Kangding. The local shear-wave(S-wave) velocity is relatively low in the middle and lower crust. The S-wave shows a low velocity trap(Vs<3.2 km s.1) at 15–30 km, which is considered a high-temperature partial melting magma, the crustal source of the hydrothermal active zone. We conclude that the hydrothermal system in this area can be divided into Batang-type and Kangding-type, both of which rely on a crustal heating cycle of atmospheric precipitation and surface water along the fracture zone. The heat is derived from the middle and lower crust: groundwater penetrates the deep faults bringing geothermal energy back to the surface and forming high-temperature springs.ZHANG Jian LI WuYang TANG XianChun TIAN Jiao WANG YingChun GUO Qi PANG ZhongHe 2017Science China Earth Sciences2017,60,8:17
5Lithospheric seismic fabrics of Sulu ultrahigh-pressure metamorphic belt显示文摘Calibration of seismic reflectors appearing in the crust of the Chinese continent sci- entific drilling site can be completed through the correlation studies between direct evidences, such as the drill cores, and geophysical signatures; therefore the interpretation of geophysical data could produce reliable results of crustal structure and composition. On the other hand, there are two Cenozoic volcanoes close to the scientific drilling site; analyzing composition of xenoliths existent in the volcanoes and evaluating their seismic velocities can also offer information about the mantle and lower crust. After the calibration via cores and well-logging data, the seismic re- flectors appearing in the UHP belt can be caused by lithological changes within the UHP rock slice, ductile shearing rock-suites, and later fracture zones. Among these sources, ductile shearing resulted in displacement and detachment of original rock-sheets, producing some rock-interbeds of several hundred meters thick that are named the ductile shearing rock-suites. A suite consists of mylonized gneiss and eclogite slices that underwent shearing, becoming the major mechanism responsible to generate regional strong reflections. The UHP rock-slice is characterized by complicated structures and high density, high seismic velocity and high electri- cal resistivity, its thickness is usually less than 11 km. Velocity and density of the gneiss-layer beneath gradually tend to normal with increasing depth. Based on the xenoliths we can infer that the middle crust contains a lot of gneisses, and the lower crust consists of different granulites. The lithospheric mantle has multi-layer structures and consists mainly of spinal lherzolite and harzburgite, implying late Mesozoic lithospheric thinning. The seismic fabrics with different ori- gins were possible products of different geodynamic processes. For instance, the UHP rock-slice was produced by the UHP metamorphic process and the exhumation of subducted supercrustal rocks after the Triassic collision between the Yangtze and Sino-Korean cratons; whilst the ductile shearing rock-suites resulted from shearing deformation processes during the subduction and exhumation. The normal velocity below the UHP rock-slice was correlated with Mesozoic exten- sion processes in the area. Through careful calibration of seismic reflectors and analyzing xeno- liths, one can find the relationship between the causes of seismic reflectors and corresponding geodynamic processes, offering a new basis for reconstruction of regional dynamic evolution history.YANG Wencai 1 , YANG Wuyang 1 , JIN Zhenmin 2 & CHENG Zhenyan 1 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 2. China University of Geosciences, Wuhan 430074, China 2005Science China Earth Sciences2005,48,5:13
6Foundation Study on Wireless Big Data: Concept, Mining, Learning and Practices显示文摘Facing the development of future 5 G, the emerging technologies such as Internet of things, big data, cloud computing, and artificial intelligence is enhancing an explosive growth in data traffic. Radical changes in communication theory and implement technologies, the wireless communications and wireless networks have entered a new era. Among them, wireless big data(WBD) has tremendous value, and artificial intelligence(AI) gives unthinkable possibilities. However, in the big data development and artificial intelligence application groups, the lack of a sound theoretical foundation and mathematical methods is regarded as a real challenge that needs to be solved. From the basic problem of wireless communication, the interrelationship of demand, environment and ability, this paper intends to investigate the concept and data model of WBD, the wireless data mining, the wireless knowledge and wireless knowledge learning(WKL), and typical practices examples, to facilitate and open up more opportunities of WBD research and developments. Such research is beneficial for creating new theoretical foundation and emerging technologies of future wireless communications.Jinkang Zhu Chen Gong Sihai Zhang Ming Zhao Wuyang Zhou 2018China Communications2018,15,12:9
7Exploring the Road to 6G: ABC-Foundation for Intelligent Mobile Networks显示文摘The 5 th generation(5 G)mobile networks has been put into services across a number of markets,which aims at providing subscribers with high bit rates,low latency,high capacity,many new services and vertical applications.Therefore the research and development on 6 G have been put on the agenda.Regarding demands and characteristics of future 6 G,artificial intelligence(A),big data(B)and cloud computing(C)will play indispensable roles in achieving the highest efficiency and the largest benefits.Interestingly,the initials of these three aspects remind us the significance of vitamin ABC to human body.In this article we specifically expound on the three elements of ABC and relationships in between.We analyze the basic characteristics of wireless big data(WBD)and the corresponding technical action in A and C,which are the high dimensional feature and spatial separation,the predictive ability,and the characteristics of knowledge.Based on the abilities of WBD,a new learning approach for wireless AI called knowledge+data-driven deep learning(KD-DL)method,and a layered computing architecture of mobile network integrating cloud/edge/terminal computing,is proposed,and their achievable efficiency is discussed.These progress will be conducive to the development of future 6 G.Jinkang Zhu Ming Zhao Sihai Zhang Wuyang Zhou 2020China Communications2020,17,6:8
8Energy Efficiency Optimization in Relay-Assisted Networks with Energy Harvesting Relay Constraints显示文摘In this paper we consider data transmission in a decode-and-forward(DF)relay-assisted network in which the relay is energy harvesting(EH) powered while the base station(BS) is power-grid powered.Our purpose is to maximize the BS's energy efficiency(EE) while making full use of the relay's renewable energy and satisfying the specific average throughput requirements.In contrast to existing literature on energy harvesting system which only considers the radio transmission power,we take the static circuit power into account as well.We formulate the EE optimization problem and prove that the EE of the BS and relay are both quasiconvex in the instantaneous transmission rate.Then we divide the complex optimization problem into two point-to-point link level optimization parts and propose an energyefficient resource allocation(EERA) scheme in which power control and sleep mode management are jointly used.The simulation results demonstrate that EERA may achieve good energy saving effects.We also compare the EE of an energy harvesting relay system with a power-grid powered one and provide more insight into the EE problem of energy harvesting relay system.ZHAO Ming ZHAO Jing ZHOU Wuyang ZHU Jinkang ZHANG Sihai 2015China Communications2015,12,2:4
9Investigation of stress corre-sion cracking under anodic dissolution control显示文摘This review is about stress corrosion cracking (SCC) under anodic dissolution control. The section 1 is the methods distinguishing SCC controlled by anodic dissolution from those by hydrogen. The section 2 presents hydrogen-enhanced corrosion and SCC under anodic dissolution control. The section 3 demonstrates corrosion-enhanced localized plasticity and corrosion-induced deformation localization, which are the fundaments of new mechanism of SCC. The section 4 is an overview of the proposed mechanisms of SCC under anodic dissolution control. The last section proposes a new mechanism of SCC.Wuyang Chu Lijie Qiao Kewei Gao 2001Chinese Science Bulletin2001,46,9:4
10Self-catalysis growth of zinc oxide nanopillar array显示文摘Zn nanodot array was prepared by using a nano-masking with porous alumina membrane as mask. Based on such a nanodot array, a self-catalysis method was developed for fabricating ZnO nanopillars on Si substrate. The resultant nanopillars show a two-dimensional, and regular array with uniform size and orientation.YUANZhihao DUANYueqin WUYang BIELijian FANShoushan 2005Chinese Science Bulletin2005,50,10:4
11Bioinformatics analysis of two-component regulatory systems in Staphylococcus epidermidis显示文摘Sixteen pairs of two-component regulatory systems are identified in the genome of Staphylococcus epidermidis ATCC12228 strain, which is newly sequenced by our laboratory for Medical Molecular Virology and Chinese National Human Genome Center at Shanghai, by using bio- informatics analysis. Comparative analysis of the two- component regulatory systems in S. epidermidis and that of S. aureus and Bacillus subtilis shows that these systems may regulate some important biological functions, e.g. growth, biofilm formation, and expression of virulence factors in S. epidermidis. Two conserved domains, i.e. HATPase_c and REC domains, are found in all 16 pairs of two-component proteins. Homologous modelling analysis indicates that there are 4 similar HATPase_c domain structures of histidine kinases and 13 similar REC domain structures of response regulators, and there is one AMP-PNP binding pocket in the HATPase_c domain and three active aspartate residues in the REC domain. Preliminary experiment reveals that the bioinfor- matics analysis of the conserved domain structures in the two-component regulatory systems in S. epidermidis may provide useful information for discovery of potential drug target.QINZhiqiang ZHONGYang ZHANGJian HEYouyu WUYang JIANGJuan CHENJiemin LUOXiaomin QUDi 2004Chinese Science Bulletin2004,49,12:4
12The mechanism of nucleation of hydrogen blister in metals显示文摘The nucleating, growing and cracking of hydrogen blister have been investigated experimentally and theoretically. The results show that atomic hydrogen induces superabundant vacancies in metals. The superabundant vacancies and hydrogen aggregate into a hydrogen-vacancy cluster (microcavity). The hydrogen atoms in the microcavity become hydrogen molecules which can stabilize the cluster. And the hydrogen blister nucleates. With the entry of vacancies and hydrogen atoms, the blister nucleus grows and the pressure in the cavity increases. When the stress induced by hydrogen pressure on the blister is up to the cohesive strength, cracks will initiate from the wall of the blister.REN XueChong ZHOU QingJun CHU WuYang LI JinXu SU YanJing QIAO LiJie 2007Chinese Science Bulletin2007,52,14:4
13Epidemic Characteristics of Human Rabies—China,2016–2020显示文摘Introduction:The epidemiological characteristics of human rabies in China in 2016–2020 were analyzed in order to provide the scientific basis for the formulation of the prevention and control policy of rabies at next stage.Methods:The data of China’s National Notifiable Disease Reporting System(NNDRS)from 2016 to 2020 were collected and analyzed by using a descriptive epidemiology method.Results:A total of 2,074 cases of human rabies were reported from 2016–2020 in China,there were year over year decreases in total number of cases.Human rabies appeared throughout the year,among which the highest in incidence happened from August to October,while March and December months were months in which the epidemic was weakest.Conclusion:Though decreases were observed for human rabies in China,further steps should be taken to maintain these results.Management should be strengthened and the immunity of dogs should be prioritized to control this situation from the source.In addition,all reported cases should be monitored and reported to achieve the accurate prevention and control.Zhengran Liu Min Liu Xiaoyan Tao Wuyang Zhu 2021China CDC weekly2021,3,39:3
14Study on Heat Treatment Process of AB/EQ56 Steel Plate显示文摘The article mainly describes the development process of AB/EQ56 steel plate for ocean engineering with thickness ≤50mm in Wuyang Iron and Steel Co.,Ltd.(Wugang),and studies the chemical analysis,metallographic structure,tensile strength and serial temperatures impact toughness of the steel plate.The results show that a good match of strength and toughness of AB/EQ56 steel plate with thickness ranging from 12mm to 95mm produced by ultra low alloying component control,controlled rolling and controlled cooling,proper quenching and tempering process,of which the properties are all conforming to the requirements of ABS rules.The steel plate has passed the certification of ABS and is qualified for production.More than 7000 tons of such steel plate have been ordered,which mainly apply for the cantilever beam of offshore oil platform.ZHANG Zhi-jun,YU Zhong-xin,YANGYue-hui (Wuyang Iron and Steel Co.,Ltd.,Wuyang 462500,Henan,China) 2011Journal of Iron and Steel Research(International)2011,18,S1:3
15iGraph: an incremental data processing system for dynamic graph显示文摘Wuyang JU Jianxin LI Weiren YU Richong ZHANG 2016Frontiers of Computer Science2016,10,3:3
16显示文摘WuYang(吴洋) ChenBo(陈波) JinFangfang(金芳芳) LiTianyi(李天一) ZhengAnna(郑安呐) GuanYong(管涌) 功能高分子学报0,,:3
17A granular adsorbent-supported Fe/Ni nanoparticles activating persulfate system for simultaneous adsorption and degradation of ciprofloxacin显示文摘In this work,Fe/Ni nanoparticles were produced through Fe(II)and Ni(II)reduction by NaBH4 and they were stabilized by a kind of prepared granular adsorbent(Fe/Ni@PGA).Fe/Ni@PGA as an environment-friendly activator was used to activate persulfate(PS)for the removal of ciprofloxacin from aqueous solution.Fe/Ni@PGA was systematically characterized via Brunauer-Emmett-Teller(BET)method,X-ray diffraction(XRD),scanning electron microscopy(SEM),and Fourier transform infrared spectroscopy(FTIR).The effects of PS concentration,initial solution pH,Fe/Ni@PGA dosage,initial ciprofloxacin concentration,reaction temperature,anions,and natural organic matters on the removal of ciprofloxacin by Fe/Ni@PGA/PS were analyzed.The removal efficiency of ciprofloxacin by Fe/Ni@PGA/PS was 93.24%under an initial pH of 3.0,PS concentration of 10 mM,Fe/Ni@PGA dosage of 0.1 g,and reaction temperature of 30℃.Fe/Ni@PGA could still exhibit high catalytic activity after nine cycles of regeneration.The removal mechanisms for ciprofloxacin by the Fe/Ni@PGA/PS system were proposed.In summary,the Fe/Ni@PGA/PS system could be applied as a promising technology for ciprofloxacin removal.Jiwei Liu Yufeng Du Wuyang Sun Quanchao Chang Changsheng Peng 2020Chinese Journal of Chemical Engineering2020,28,4:3
18Variation of Zooplankton Ecological Group During Spring in China Estuaries显示文摘Zooplankton was major indicator species of the environment. To explore the effect of marine environment on zooplankton distribution in the coast of China, the zooplankton samples from stations in Guanhe Estuary(GE), Changjiang(Yangtze River) Estuary(CE), Oujiang Estuary(OE), Jiulongjiang Estuary(JE) and Beilun Estuary(BE)(covering 14 latitudes) in spring were surveyed and the variation of zooplankton ecological group was researched. According to the adaptability temperature, the zooplankton was divided into two ecological groups: warm-temperate species and subtropical species. The warm-temperate species was the main dominant species and subtropical species was only dominant species in BE. Calanus sinicus, a warm-temperate species, was the only dominant species in all five estuaries. From north to south, the proportion of warm-temperate species in the five estuaries gradually decreased depends on the number, were 83.33%, 48.39%, 45.00%, 43.75% and 30.43%, respectively. In contrary, the proportion of subtropical species was gradually increased. The warm-temperate species predominated over the total abundance and the percentage was whopping high in the north estuaries, including GE(96.16%), CE(95.57%), OE(97.83%) and JE(95.53%). The abundance percentage of subtropical species have remarkably higher(82.39%) in BE. Five estuaries zooplankton community was subdivided into three zooplankton groups, which were the northern warm temperate zooplankton group, the southern subtropical zooplankton group and the estuarine brackish-water group. The water temperature and coastal current of China Sea are recognized as the main factors determining the distribution and community structure of estuarine zooplankton in spring.LU Wuyang GAO Qian XU Zhaoli 2019Journal of Ocean University of China2019,18,2:2
19Benefits Analysis of Beam Hopping in Satellite Mobile System with Unevenly Distributed Traffic显示文摘Satellite mobile system and space-airground integrated network have a prominent superiority in global coverage which plays a critical role in remote and non-land regions, as well as emergency communications. However, due to the gradual angle attenuations of the satellite antennas, it is difficult to achieve full frequency multiplex among different beams as terrestrial 5G network. Multi-color frequency reuse is widely adopted in both academic and industry. Beam hopping scheme has attracted the attention of researchers recently due to the allocation flexibility. In this paper, we focus on analyzing the performance benefits of beam hopping compared with multi-color frequency reuse scheme in non-uniform user and traffic distributions in satellite system. Aerial networks are also introduced to form a space-airground integrated network for coverage enhancement,and the capacity improvement is analyzed. Besides,additional improved techniques are provided to make comprehensive analysis and comparisons. Theoretical analysis and simulation results indicate that the beam hopping scheme has a prominent superiority in the system capacity compared with the traditional multicolor frequency reuse scheme in both satellite mobile system and future space-air-ground integrated network.Yitao Li Zhongqiang Luo Wuyang Zhou Jinkang Zhu 2021China Communications2021,18,9:2
20Effect of electric field,stress and environment on delayed fracture of a PZT-5 ferroelectric ceramic显示文摘The combined effect of electric and mechanical loading on fracture of a PZT-5 ferroelectric ceramic in silicone oil has been investigated using a single edge notched specimen. The results show that the fracture toughness and the threshold stress intensity factor of delayed fracture in silicone oil, i.e. stress corrosion cracking, decrease linearly with the increasing applied electric field, either positive or negative. For the PZT-5 ferroelectric ceramics, delayed fracture in silicone oil under sustained positive or negative field can occur, and the threshold field for delayed fracture under sustained positive or negative field decreases linearly with applied stress intensity factor. The combined effect of electric and mechanical loading on delayed fracture in silicone oil includes fieldenhancing delayed fracture under sustained load and stress-enhancing delayed fracture in silicone oil under sustained field.WANG Yi, SU Yanjing, CHU Wuyang & QIAO Lijie Department of Material Physics, University of Science and Technology Beijing, Beijing 100083, China School of Mechanic and Electric Control Engineering, Beijing Jiaotong University, Beijing 100044, China 2005Science China(Physics,Mechanics & Astronomy)2005,48,1:2
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