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Are social embeddedness associated with food risk perception under media coverage?

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Journal of Integrative Agriculture 2019年第8期18卷 1804-1819页

作者： yan Zhen HUANG zu-hui WANG Yu ZHOU Jie-hong Center of Agricultural and Rural Development School of Public Affairs Zhejiang University

Traceability system has received wide attention in solving food safety issues, via which food information could be tracked back to producer/farmers. Consumers need to obtain this information from producers or social networks, trust in the information,and consequently assess perceived risks, especially when food scandals are exposed to the media. In this study, we introduce the social embeddedness theory to understand how consumers’ social activities affect their risk perceptions on traceable food. Specifically, we investigate how risk perceptions are predicted by the interpersonal relationships, organizational level and social-level relationships. Results show that the interpersonal relationships were associated with lower levels of risk perceptions, while organizational and social relationships impacted consumer’s risk perceptions at middle and higher levels,respectively. Results also show that the "ripple effect" extended to effect of risk events with negative information, however,did not exist for the group exposed to positive information. Potential food safety implications have been proposed to identify for effective risk mitigation under media coverages.

关键词： food safety social relationship risk perception media coverage embeddedness

A Reverse Auction Framework for Hybrid Access in Femtocell Network

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Journal of Computer Science & Technology 2017年第6期32卷 1250-1264页

作者： yan-Jiao Chen xiao-yan Yin Jin Zhang State Key Laboratory of Software Engineering School of Computer Wuhan University Wuhan 430072 China School of Information Science and Technology Northwest University Xi'an 710127 China Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen 518055 China

In the two-tier macro-femto heterogeneous network, hybrid access is regarded as the most ideal access con- trol approach to mitigating macro-femto cross-tier interference and enhancing overall network performance. However, the implementation of hybrid access is hindered by a lack of incentive market mechanism to motivate private femtocell owners to offer access permissions to macro users. In this paper, we propose a reverse auction framework for access permission transaction between a macrocell operator and multiple femtocell owners to promote hybrid access. Our goal is to maximize social welfare while guaranteeing the truthfulness of the auction. Since the coverage of multiple femtocells may overlap, we partition each cell to adjust the granularity of access permission availability. We first propose a Vickery-Clarke-Grove （VCG）-based mechanism, which costs the least among all auction mechanisms that produce maximum social welfare. As the VCG mechanism is too time-consuming, we propose two alternative truthful mechanisms, namely, generalized second- price and suboptimal mechanism. We further extend the auction framework to the scenario where femtocell owners have heterogeneous valuations for access permissions in different locations.

关键词： femtocell hybrid access reverse auction

A simple image-based method for online moisture content estimation of iron ore green pellets

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Journal of Iron and Steel Research International 2023年第5期30卷 851-863页

作者： Shu-yi Zhou xiao-yan Liu College of Electrical and Information Engineering Hunan UniversityChangsha 410082HunanChina Innovation Institute of Industrial Design and Machine Intelligence Quanzhou-Hunan University Quanzhou 362006FujianChina

Moisture content(MC)is an important quality metric of iron ore green pellets in pelletizing process in ironmaking *** image-based methods for MC estimation may result in big errors for gray-scale pellet images captured under various lighting *** proposed a simple image-based method to improve the MC estimation accuracy by illumination correction and linear regression ***,the illumination of the pellet image was transformed into the reference illumination by use of a color checker chart and piecewise linear interpolation,so that the influence of different illuminations could be greatly *** experimental analysis,it was found that MC is approximately adversely proportional to the average intensity of the transformed images.A simple model for MC prediction was then established by linear *** demonstrated that the proposed method has good robustness to different lighting conditions and achieves the best performance in metrics of mean square error,mean absolute error and maximum absolute error in comparison with five state-of-art MC estimating *** on a working disk pelletizer shows that the proposed method can predict well the change of moisture content with time,and its computing efficiency can satisfy the requirement for online MC monitoring during the pelletizing process.

关键词： Green pellet Moisture content Image processing Pelletizing process

Phase behavior of undecane–tetradecane mixtures confned in SBA-15

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Chinese Chemical Letters 2013年第10期24卷 885-888页

作者： xiao yan xiao-Zheng Lan College of Chemistry and Materials Science Shandong Agriculture University

Phase behavior of undecane-tetradecane （n-C11H24-C14H3o, C11-C14） mixtures in bulk and confined in SBA-15 have been studied using differential scanning calorimetry. The bulk C11-C14 system shows multiple phase regions due to rotator phase. Confined in the pores of SBA-15 （pore diameters 3.8- 7.8 rim）, the mixtures only show a melting boundary of a straight line and a curve, respectively. In SBA- 15 （ 17.2 nm）, phase behavior of the mixtures has some similarity to that of the bulk. Under confinement, the phase diagrams of the mixtures vary with the pore size, temperature, and compositions.

关键词： Confinement Undecane-tetradecanemixtures Size effect Phase diagram

大比例浅水矩形水箱振动台试验研究及TLD等效线性化分析

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Expert consensus of Chinese Association for the Study of Pain on the non-opioid analgesics for chronic musculoskeletal pain

工程力学 2025年第1期42卷 143-151页

作者：肖从真巫振弘陈凯唐意严亚林中国建筑科学研究院有限公司北京100013 国家建筑工程技术研究中心北京100013

调谐液体阻尼器(TLD)是高层建筑减振的有效措施。该文进行了大比例浅水矩形水箱振动台试验研究，分析了将调谐液体阻尼器按等效线性化等效为单自由度系统的可行性。采用振动台试验得到目标水箱在0.6倍~1.4倍水体自振频率简谐激励荷载下... 详细信息

调谐液体阻尼器(TLD)是高层建筑减振的有效措施。该文进行了大比例浅水矩形水箱振动台试验研究，分析了将调谐液体阻尼器按等效线性化等效为单自由度系统的可行性。采用振动台试验得到目标水箱在0.6倍~1.4倍水体自振频率简谐激励荷载下，水体稳态振动时的水箱反力和频响函数;测量不同振动幅度下，水体的自振频率偏差;由水体自由振动衰减，测得5种不同网栅条件下的附加阻尼比;将风和地震荷载下某249 m高楼顶加速度作为水箱激励进行振动台混合试验，实测水箱反力和滞回曲线，并与等效线性化模型计算结果进行对比。结果表明，以最大变形割线刚度作为等效刚度、按等能量方法确定阻尼比的等效线性化模型基本可行，在简谐波和风荷载作用下较符合试验结果，在地震荷载下存在一定偏差。试验结果可为类似调谐液体阻尼器设计提供依据。

关键词：高层结构调谐液体阻尼器振动台试验附加阻尼比浅水水箱等效线性化

来源：博看期刊评论

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World Journal of Clinical Cases 2021年第9期9卷 2068-2076页

作者： Dong Huang yan-Qing Liu Ling-Jie Xia Xian-Guo Liu Ke Ma Guang-Zhao Liu Li-zu xiao Tao Song xiao-Qiu yang Zhi-Jian Fu Min yan Department of Algology Third Xiangya Hospital of Central South UniversityChangsha 410013Hunan ProvinceChina Department of Algology Beijing Tiantan HospitalCapital Medicine UniversityBeijing 100070China Department of Algology Henan Provincial People's HospitalZhengzhou 450008Henan ProvinceChina Department of Physiology and Pain Research Center Sun Yat-Sen UniversityGuangzhou 510089Guangdong ProvinceChina Department of Algology Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Department of Algology The Second Hospital of Hebei Medical UniversityShijiazhuang 050000Hebei ProvinceChina Department of Algology Huazhong University of Science and Technology Union Shenzhen HospitalShenzhen 518052Guangdong ProvinceChina Department of Algology First Affiliated Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Algology First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Algology Shandong Provincial HospitalJinan 250021Shandong ProvinceChina Department of Algology The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009Zhejiang ProvinceChina

Chronic musculoskeletal pain(CMP)is a common occurrence in clinical practice and there are a variety of options for the treatment of ***,the pharmacological therapy is still considered to be a primary *** recent years have witnessed the emergence of opioid crisis,yet there are no relevant guidelines on how to treat CMP with non-opioid analgesics *** Chinese Medical Association for the Study of Pain convened a panel meeting to develop clinical practice consensus for the treatment of CMP with non-opioid *** purpose of this consensus is to present the application of nonsteroidal antiinflammatory drugs,serotonin norepinephrine reuptake inhibitors,serotonin and norepinephrine reuptake inhibitors,muscle relaxants,ion channel drugs and topical drugs in CMP.

关键词： Chronic musculoskeletal pain Non-opioid analgesics Nonsteroidal antiinflammatory drugs Noradrenaline reuptake inhibitor Nociceptor Cyclooxygenase

SU(3) Breaking from Baryon-Meson Fluctuation in Baryon Magnetic Moments

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Chinese Physics Letters 2001年第2期18卷 190-192页

作者： CHEN xiao-Lin MA Bo-Qiang zu Dong-Lin Department of Physics Peking UniversityBeijing 100871 Department of Technical Physics Peking UniversityBeijing 100871

We investigate the effect of intrinsic sea quark-antiquark pairs on the magnetic moments of the SU(3)octet *** intrinsic quark-antiquark pairs are introduced by a model of energetically-favoured non-perturbative baryon-meson *** is shown that the baryon-meson fluctuation model provides a mechanism of SU(3)symmetry breaking in the baryon sea and is related to the violations of Gell-Mann-Okubo and Coleman-Glashow sum rules for the baryon magnetic *** a model is also consistent with its explanation of the violations of Gottfried and Ellis-Jaffe sum rules in deep inelastic scattering.

关键词： scattering SU(3) quark

Empirical Likelihood for Partially Linear Errors-in-variables Models with Longitudinal Data

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Acta Mathematicae Applicatae Sinica 2022年第3期38卷 664-683页

作者： Li yan xiao-yan TAN Xia CHEN School of Mathematics and Statistics Shaanxi Normal UniversityXi’an 710119China

Empirical likelihood inference for partially linear errors-in-variables models with longitudinal data is *** regularity conditions,it is shown that the empirical log-likelihood ratio at the true parameters converges to the standard Chi-squared ***,we consider some estimates of the unknown parameter and the resulting estimators are shown to be asymptotically *** simulations and a real data analysis are given to illustrate the performance of the proposed method.

关键词： empirical likelihood measurement error confidence regions coverage probability longitudinal data

Molecular Diversity of Three-Component Reaction of β-Enamino Imide, Malononitrile and Cyclic α-Diketones

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Chinese Journal of Chemistry 2017年第9期35卷 1422-1430页

作者： Man xiao Chaoguo yan College of Chemistry & Chemical Engineering Yangzhou University Yangzhou Jiangsu 225002 China

The base promoted three-component reaction of β-enamino imide, malononitrile and various cyclic α-diketones in acetonitrile showed interesting molecular diversity. The reactions with acenaphthylene-1,2-dione and ninhydrin afforded functionalized spiro[indene-2,4＇-pyrrolo[3,4-b]pyridines] and spiro[acenaphthylene-1,4＇-pyrrolo[3,4-b]- pyridines] in good yields. The similar reaction of phenanthrene-9,10-dione resulted in the formation of the unexpected complex phenanthro[9＇, 10＇：4,5]furo[2,3-c]pyrrolo[3,4-b]pyrroles in satisfactory yields.

关键词： multicomponent reaction β-enamino imide spiro compound ninhydrin phenanthrene-9,10-dione