|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Quantitative assessment and visualization of flight risk induced by coupled multi-factor under icing conditions显示文摘Aircraft icing has been proven to be one of the most serious threats to flight safety. During the analysis of flight risk under icing conditions, quantitative assessment and visualization of flight risk are quite essential as they provide safe manipulation strategies in intricate conditions.However, they are rarely studied. Since the icing flight accidents are the result of the coupling of multiple unfavorable factors, in present study, we have proposed a method to quantitatively assess flight risk induced by multi-factor coupling under icing conditions by Monte-Carlo simulation and multivariate extreme value theory. The results demonstrate that the flight risk probability increases with the rise of unfavorable factors. Besides, a flight risk visualization method named flight safety window has been presented to build the flight risk distribution cloud maps in different complex conditions. The cloud maps show that the icing would give rise to atrophy of the safety scope, and the consequence would be even more severe when coupled with other more unfavorable factors. The proposed methods in this study would be useful in flight risk analysis under icing conditions and can enhance the pilot's situational awareness in selecting correct strategies within the safety zone to avoid unsafe manipulation. | Yang WEI Haojun XU Yuan XUE Xiaocong Duan | 2020 | Chinese Journal of Aeronautics2020，33，8： | 4 |
| 2 | Conceptual design and preliminary experiment of icing risk management and protection system显示文摘Icing is one of the main external environmental factors that causes aircraft to lose control.The flight safety assurance system under icing condition is particularly important.However,most of the systems do not consider the coupling characteristics of aerodynamics and flight dynamics of icing aircraft.This will affect the accuracy of the calculation results.Besides,the icing risk management system helps the pilot to realize the possible dangers in advance and perform correct maneuvers,based on quantitative assessment and visualization methods of flight risk.The envelope protection system realizes flight safety guarantee based on the real-time boundary protection method of key flight parameters.Finally,based on distributed simulation technology,a flight simulator was used as a platform to integrate the icing risk management system and envelope protection system to realize man-in-the-loop simulation.Two fictional but historically motivated icing scenarios are designed to test the system,and the results demonstrate that the icing risk management and protection system would be useful for aviation safety and can also be used for pilot training and reproducing flight accidents to find the causes. | Qiang WU Haojun XU Binbin PEI Yang WEI | 2022 | Chinese Journal of Aeronautics2022，35，6： | 3 |
| 3 | Epoxidized methyl ricinoleate bio-plasticizer with a pendant acetate ester for PVC artificial material:circumventing existing limit on achievable migration resistance显示文摘Processing polyvinyl chloride(PVC)artificial material requires plasticizer that softens the PVC coating.Currently,utilizing unsaturated fatty acid methyl esters to obtain epoxidized fatty acid methyl ester(EFAME)bio-plasticizers constitutes an environmentally responsible solution to substitute conventional ortho-phthalates that are endocrine disruptors or probable carcinogens.However,commercial EFAMEs,even with the highest epoxy value(ca.5.5-5.8%)so far,still suffer from fast leaching from the PVC matrix,burdening the environment and shortening lifespan of the artificial material.Here,we report a proof-of-principle demonstration of a new strategy to obtain migration-resistant EFAME that harnesses the midchain hydroxyl of methyl ricinoleate and covalently attachment of a pendant acetate ester.Despite a low epoxy value(3.0%),the engineered bio-plasticizer displays significantly suppressed migration in multiple scenarios compared with one conventional EFAME with much higher epoxy value(5.8%).Circumventing the limit confronting previous strategy that highlights the sole contribution of epoxy value to achievable migration resistance,the rationale herein may provide guidance for designing new EFAMEs with comparable performance to ortho-phthalates,thus bringing the old and oft-maligned PVC artificial material industry one step closer to sustainability. | Siyu Pan Delong Hou Gaofu Yang Qiuping Xie Sunxian Yan Qi Zeng Zhonghui Wang Yi Chen Haojun Fan | 2019 | Journal of Leather Science and Engineering2019，1，1： | 3 |
| 4 | Shallow Convolutional Neural Networks for Acoustic Scene Classification显示文摘最近,深神经的网络,它包括 convolutional 神经网络(CNN ) ,广泛地被用于声学的景色分类(ASC ) 。由一些简化 CNN 在深 CNN 上看了改进的事实激发了,例如视觉几何学组网(VGG 网) ,我们弄明白怎么与改进性能简化 VGG 网风格体系结构到浅 CNN。分享的马克斯和正规化也是的批申请了更好的精确性。与声学的场面和事件(DCASE ) 的察觉和分类上的一系列控制测试, 2016 数据设定,我们的浅 CNN 完成 6.7% 改进,并且把时间复杂性归结为 5% ,与 VGG 网风格 CNN 相比。 | LU Lu YANG Yuhong JIANG Yuzhi AI Haojun TU Weiping | 2018 | Wuhan University Journal of Natural Sciences2018，23，2： | 3 |
| 5 | lncRNA-AC130710 targeting by miR-129-5p is upregulated in gastric cancer and associates with poor prognosis显示文摘 | Chunjing Xu Yongfu Shao Tian Xia Yunben Yang Jiawei Dai Lin Luo Xinjun Zhang Weiliang Sun Haojun Song Bingxiu Xiao Junming Guo | 2014 | Tumor Biology2014，，10： | 1 |
| 6 | Resource allocation schemes in multi-vehicle cooperation systems显示文摘With the rapid development of smart driving and communications technologies,an increasing number of vehicles are cooperating with each other to improve traffc effciency and travel safety.This paper conducts a comprehensive survey of multi-vehicle cooperation from the aspects of control and communication.Firstly,three typical multi-vehicle cooperation scenarios are summarized.Communication issues relating to multi-vehicle cooperation are then introduced,including communication types,requirements,and potential solutions.To address the control requirements,a general resource allocation solution for multi-vehicle cooperation is formulated;speci cally,two types of resource allocation scheme for intersection management are proposed.Finally,performance of the proposed schemes is evaluated and compared. | Hang Liu Haojun Yang Kan Zheng Lei Lei | 2017 | Journal of Communications and Information Networks2017，2，2： | 1 |
| 7 | Hepatic SIRT6 deficit promotes liver tumorigenesis in the mice models显示文摘SIRT6 belongs to class III sirtuin family with NAD+-dependent histone deacetylase activities and controls multiple processes including aging,metabolism and inflammation.In recent years,increasing studies showed tumor suppressor role of SIRT6 in HCC development.We established a two-stage DEN followed CC14 induced liver carcinogenesis in the hepatic-specific SIRT6 HKO mice models and found that hepatic S1RT6 deficit significantly promotes liver injury and liver cancer through inhibition of the ERK1/2 pathway.SIRT6 was compensatory up-regulated in mice tumor tissues and human HCC cells and overexpressed SIRT6 inhibits tumor growth both in vitro and in vivo.Taken together,we provide a useful mouse model for delineating the molecular pathways involved in chronic liver diseases and primary liver cancer and suggest that SIRT6 can be a promising target for HCC therapies. | Mei Wang Linhua Lan Fan Yang Shan Jiang Haojun Xu Chengfei Zhang Guoren Zhou Hongping Xia Jinglin Xia | 2022 | Genes & Diseases2022，9，3： | 1 |
| 8 | Research on the Influence Degree and Effect of Support on Innovation Incentives for R&D Personnel in Micro and Small Enterprises:An Empirical Study based on the China Micro and Small Enterprise Survey(CMES)显示文摘In this study,the influence degree and effect of support on innovation incentives for research and development(R&D)personnel in micro and small enterprises(MSEs)were explored based on the CMES data.We found that government support will increase the R&D wage and widen the gap between R&D wage and staff wage,especially for small,non-high-tech enterprises with strict financing constraints.Furthermore,taking the wage gap as a mediator,we concluded that support would widen the wage gap and increase management innovation rather than technological innovation in MSEs because the wage premium of R&D personnel is the main driver for the increase of management innovation.The findings of this study provide useful enlightenment for China to implement an innovation-driven strategy and build an innovative country. | Xiong Yang Li Haojun Tang Jiqiang | 2022 | Contemporary Social Sciences2022，7，5： | 0 |
| 9 | Functional non-glutaraldehyde treated porcine pericardium for anti-coagulation,anti-calcification,and endothelial proliferation bioprosthetic heart valves显示文摘In the last decade,the number of transcatheter heart valve replacement for severe heart valve disease has increased exponentially.Although the bioprosthetic artificial heart valve(BHV)has similar fluid dynamics performance to the original heart valve compared with mechanical heart valve so that there is no need to take long-term anticoagulant drugs to prevent thromboembolism,transcatheter BHV replacement are still at risk for thrombosis during the first few months according to the clinical data.However,the use of antithrombotic drugs can also increase the risk of bleeding.Therefore,it is particularly important to improve the anticoagulant properties for the BHV itself.In this work,a kind of non-glutaraldehyde cross-linked BHV material with excellent antithrombotic ability has been prepared from carboxylated oxazolidine treated porcine pericardium(consisting of collagen,elastin and glycoprotein)with the further graft of the anticoagulant heparin sodium via hydrophilic modified chitosan.Along with the similar mechanical properties and collagen stability comparable to the glutaraldehyde cross-linked porcine pericardium(PP),these functional non-glutaraldehyde cross-linked PPs exhibit better biocompatibility,promoted endothelial proliferation and superior anti-calcification ability.More importantly,excellent anticoagulant activity can be observed in the hematological experiments in vivo and in vitro.In summary,these excellent performances make these functional non-glutaraldehyde cross-linked PPs great potentialities in the BHV applications. | Xiaotong Chen Tao Yu Qunshou Kong Dajun Kuang Hong Xu Zhiyu Zhao Li Yang Gaocan Li Haojun Fan Yunbing Wang | 2022 | Journal of Leather Science and Engineering2022，4，1： | 0 |
| 10 | Double-face intelligent hole position planning method for precision blasting in roadways using a computer-controlled drill jumbo显示文摘To solve the uneven burden of same-type holes reducing the blasting efficiency due to the limitation of drilling equipment,we need a double-face program-controlled planning method for hole position parameters used on a computer-controlled drilling jumbo.The cross-section splits into even and uneven areas.It also considers the uneven burden at the hole’s entrance and bottom.In the uneven area,various qualifying factors are made to optimize the hole spacing and maximize the burden uniformity,combined with the features of the area edges and gridbased segmentation methods.The hole position coordinates and angles in the even area are derived using recursion and iteration algorithms.As a case,this method presents all holes in a 4.8 m wide and 3.6 m high cross-section.Compared with the design produced by the drawing method,our planning in the uneven area improved the standard deviation of the hole burden by 40%.The improved hole layout facilitates the evolution of precise,efficient,and intelligent blasting in underground mines. | Haojun Wu Min Gong Renshu Yang Xiaodong Wu Xiangyu Liu | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，6： | 0 |
| 11 | Crystal structure of monkeypox H1 phosphatase,an antiviral drug target显示文摘Dear Editor,Since its appearance in May 2022,monkeypox has spread to>100 countries and afflicted tens of thousands of people.Individuals infected with monkeypox present a fever,an extensive characteristic rash,and usually swollen lymph nodes(Chatterjee et al.,2022).The number of confirmed cases worldwide continues to grow at a rapid rate,but the treatment to this highly infectious viral disease is still very limited.Identification of new targeted-therapies will be crucial to control of this emerging public health threat. | Wen Cui Haojun Huang Yinkai Duan Zhi Luo Haofeng Wang Tenan Zhang Henry C Nguyen Wei Shen Dan Su Xi Li Xiaoyun Ji Haitao Yang Wei Wang | 2023 | Protein & Cell2023，14，6： | 0 |
| 12 | Occurrence,spatial and seasonal variation,and environmental risk of pharmaceutically active compounds in the Pearl River basin,South China显示文摘The occurrence,fate,and environmental risk of 40 pharmaceutically active compounds(PhACs)from surface waters and sediments were comprehensively investigated in the Beijiang River,Xijiang River,and Maozhou River of the Pearl River basin,South China.Salicylic acid and diclofenac(antiinflammatory drugs),gemfibrozil(a lipid regulator),carbamazepine(an antiepileptic drug),diazepam(a psychoactive drug),and 2-methyl-4-chloro-phenoxyacetic acid(MCPA,a pesticide)were the most ubiquitous compounds in the studied region.The average concentrations of detected PhACs in surface waters and sediments ranged from 0.17 to 19.1 ng/L and 0.10 to 10.4 ng/g,respectively.Meanwhile,PhACs concentration in surface waters and sediments varied greatly among and within the Beijiang River,Xijiang River,and Maozhou River.The largest annual flux of PhACs of the Xijiang River and Beijiang River was more than 11000 kg per annum,whereas only 25.7 kg/a in the Maozhou River.In addition,the estimated emissions of PhACs in the Beijiang River,Xijiang River,and Maozhou River ranged respectively from 0.28 to 4.22 kg/a,0.12 to 6.72 kg/a,and 6.66 to 91.0 kg/a,and the backestimated usage varied with a range from 12.0 to 293 kg/a,6.79 to 944 kg/a,368 to 17459 kg/a.Moreover,the emissions of PhACs showed a close relationship with the gross domestic product(GDP)of each city along the Pearl River.The environmental risk assessment suggested that diazepam and ibuprofen had a moderate risk in this region. | Haojun Lei Kaisheng Yao Bin Yang Lingtian Xie Guangguo Ying | 2023 | Frontiers of Environmental Science & Engineering2023，17，4： | 0 |
| 13 | Heterogeneous Vehicular Networks for Social Networks: Requirements and Challenges显示文摘Heterogeneous vehicular networks(HetVNETs) are regarded as a promising technique ior meeting various requirements of intelligent transportation system(ITS) services.With the rapid development of mobile Internet in the past decade,social networks(SNS)have become an indispensable part of human life.Based on this indivisible relationship between vehicles and users,social characteristics and human behaviors can significantly affect vehicular network performance.Hence,we firstly present two architectures for SNs by introducing social characteristics into the HetVNETs.Then,several user cases are also given in this paper,in which service requirements are analyzed simultaneously.At last,we briefly discuss potential challenges raised by the HetVNETs for SNs. | YANG Haojun ZHENG Kan LEI Lei XIANG Wei | 2016 | ZTE Communications2016，14，3： | 0 |
| 14 | Differences in loading patterns between fast walking and jogging at the same speed in male adults显示文摘Fast walking and jogging are two common exercises for people to maintain health in daily life.But the differences in loading patterns of fast walking and jogging are still unclear.The purpose of this study was to compare loading patterns in fast walking and jogging at the same speed,and to identify how differences in foot mechanics influence plantar pressure distribution between the two modes of gait.Totally,49 healthy males participated in this study.Data of pressure parameters,including maximum force(MF),peak pressure(PP),contact area(CA),force-time integral(FTI),were recorded by Pedar-X insole plantar pressure measurement system in participants’fast walking and jogging process at 7 km/h.A Load transfer analysis method was used to quantify the plantar load transference from fast walking to jogging.The results showed that MF,PP and CA increased in metatarsal regions and midfoot regions while decreased in toes regions and heel during jogging when compared with fast walking.FTI decreased in all foot regions during jogging compared to fast walking.Under the effects of spring mechanics and the varus of rearfoot during jogging,fast walking and jogging reveal different loading patterns.Compared jogging to fast walking,load transferred as follow:1)in transverse direction,load transferred from lateral foot to medial foot in metatarsal regions and midfoot regions,2)in longitudinal direction,load transferred from toes to the metatarsal,and from heel to the metatarsal and midfoot.These results also provide suggestions for footwear designs. | Ruoyi Li Hao Liu Mengyuan Guo Jitka Badurova Luming Yang Haojun Fan | 2020 | Journal of Leather Science and Engineering2020，2，1： | 0 |
| 15 | Recent Advances in Hole Making of FRP/Metal Stacks:A Review显示文摘Weight reduction is a key driving force for materials development in aerospace industry,which leads to extensive usage of lightweight structural materials such as fiber reinforced polymer(FRP),titanium alloy,aluminum alloy,etc.Hole making is indispensable to assembling these lightweight components by riveted or bolted joints.However,hole making of FRP / metal stacks is always the most challenging task due to differences of material properties between FRP and metals.A comprehensive literature review on hole making of FRP/metal stacks in the last decade is given with a focus on four main aspects including drilling operation,drilling damages and machining parameter optimization,tool performance and wear,and developments in hole making technology.Finally,in order to ensure the precise and efficient hole making of FRP/metal stacks,an idea of low frequency vibration assisted drilling(LFVAD)FRP/metal stacks based on material removal characteristics is put forward by fully exploiting the unique advantages of LFVAD technology. | CHEN Yan YANG Haojun XU Jiuhua FU Yucan YAN Chaoren | 2019 | Transactions of Nanjing University of Aeronautics and Astronautics2019，36，3： | 0 |
| 16 | Enhanced luminescence efficiency and thermal stability via introduction of non-rare earth Bi^(3+)in Gd_5Si_(2)BO_(13):Eu^(3+)显示文摘A series of Gd_5Si_(2)BO_(13):Eu^(3+)and non-rare earth Bi^(3+)ions doped Gd_5Si_(2)BO_(13):Eu^(3+)phosphors was successfully synthesized via high-temperature solid-state method,and the as-obtained phosphors were studied on their phase structures,luminescence characteristics,thermal stability and luminescence lifetime.Transient fluorescence spectroscopy data show that the addition of Bi^(3+)can obviously enhance the emission intensity of Eu^(3+)in the near-ultraviolet band owing to energy transfer from Bi^(3+)to Eu^(3+).Besides,the addition of Bi^(3+)can improve the thermal stability of a single-doped phosphor Gd_5Si_(2)BO_(13):0.35Eu^(3+)from 70.33%to 87.45%at 150℃and the quantum yield from 58.80%to 78.61%at room temperature.Finally,Gd_5Si_(2)BO_(13):Eu^(3+),Bi^(3+)was used to encapsulate white light-emitting diodes(WLEDs)with green((Ba,Sr)_(2)SiO_(4):Eu^(2+))and blue(BaMgAI_(10)O_(17):Eu^(2+))commercial phosphors.The color rendering index of WLEDs was calculated to be larger than 90,and the color temperature was estimated to be 4300-4500 K,which demonstrate that Gd_5Si_(2)BO_(13):Eu^(3+),Bi^(3+)can be regarded as a red phosphor with great potential application.This paper can provide a new insight into design of high-efficiency phosphors by introducing non-rare earth Bi^(3+)ions via energy transfer from Bi^(3+)to Eu^(3+). | Yukun Liu Yangai Liu Haojun Yu Chenguang Yang Cian Xie Jian Chen | 2023 | Journal of Rare Earths2023，41，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员