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Dynamic temperature prediction of electronic equipment under high altitude long endurance conditions

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Chinese Journal of Aeronautics 2018年第6期31卷 1189-1197页

作者： Liping PANG Miao ZHAO Kun LUO Yongli yin Zhou yue School of Aeronautic Science and Engineering Beihang University Beijing 100083 China National Key Laboratory of Human Factors Engineering China Astronaut Research and Training Center Beijing 100094 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration. Nanjing 211102 China

Unmanned Aerial Vehicle（UAV） is developing towards the direction of High Altitude Long Endurance（HALE）. This will have an important influence on the stability of its airborne electronic equipment using passive thermal management. In this paper, a multi-node transient thermal model for airborne electronic equipment is set up based on the thermal network method to predict their dynamic temperature responses under high altitude and long flight time conditions. Some relevant factors are considered into this temperature prediction model including flight environment,radiation, convection, heat conduction, etc. An experimental chamber simulating a high altitude flight environment was set up to survey the dynamic thermal responses of airborne electronic equipment in a UAV. According to the experimental measurement results, the multi-node transient thermal model is verified without consideration of the effects of flight speed. Then, a modified way about outside flight speed is added into the model to improve the temperature prediction performance. Finally, the corresponding simulation code is developed based on the proposed model. It can realize the dynamic temperature prediction of airborne electronic equipment under HALE conditions.

关键词： Airborne electronic equipment High altitude long endurance Multi-node transient thermal model Node thermal network Temperature prediction

Social media in Git Hub: the role of @-mention in assisting software development

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Science China(Information Sciences) 2017年第3期60卷 50-67页

作者： Yang ZHANG Huaimin WANG Gang yin Tao WANG yue YU Key Laboratory of Parallel and Distributed Computing College of ComputerNational University of Defense Technology

Recently, many researches propose that social media tools can promote the collaboration among developers, which are beneficial to the software development. Nevertheless, there is little empirical evidence to confirm that using @-mention has indeed a beneficial impact on the issues in Git Hub. In order to begin investigating such claim, we examine data from two large and successful projects hosted on Git Hub, the Ruby on Rails and the Angular JS. By using qualitative and quantitative analysis, we give an in-depth understanding on how @-mention is used in the issues and the role of @-mention in assisting software development. Our statistical results indicate that, @-mention attracts more participants and tends to be used in the difficult issues. @-mention favors the solving process of issues by enlarging the visibility of issues and facilitating the developers' collaboration. Our study also build an @-network based on the @-mention database we *** the @-network, we investigate its evolution over time and prove that we certainly have the potential to mine the relationships and characteristics of developers by exploiting the knowledge from the @-network.

关键词： issues social media @-mention Git Hub software development

A Novel Method for Fabrication of a Glass-Electrode-Based Lipase Sensor

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Chinese Chemical Letters 2001年第5期12卷 453-456页

作者： Xi Rong HUANG yue Zhong LI Guo Liang YANG Li Li LIU yin Bo QU wen Juan ZHANG State Key Lab of Microbial Technology of China Shandong UniversityJinan 250100 Key Lab for Colloid and Inferface Chemistry of the Education Ministry of China Shandong UniversityJinan 250100

Based on an unusual reversible sol-gel transition phenomenon. a novel method for the fabrication of a lipase electrode was developed. The response characteristics of the biosensor was studied by potentiometric technique using olive oil as substrate. After optimization, the lipase electrode demonstrated high activity and good stability.

关键词： Lipase microemulsion-based gel biosensor response characteristics.

Determinants of pull-based development in the context of continuous integration

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Science China(Information Sciences) 2016年第8期59卷 53-66页

作者： yue YU Gang yin Tao WANG Cheng YANG Huaimin WANG College of Computer National University of Defense Technology National Laboratory for Parallel and Distributed Processing

The pull-based development model, widely used in distributed software teams on open source communities, can efficiently gather the wisdom from crowds. Instead of sharing access to a central repository,contributors create a fork, update it locally, and request to have their changes merged back, i.e., submit a pull-request. On the one hand, this model lowers the barrier to entry for potential contributors since anyone can submit pull-requests to any repository, but on the other hand it also increases the burden on integrators, who are responsible for assessing the proposed patches and integrating the suitable changes into the central repository. The role of integrators in pull-based development is crucial. They must not only ensure that pull-requests should meet the project’s quality standards before being accepted, but also finish the evaluations in a timely manner. To keep up with the volume of incoming pull-requests, continuous integration(CI) is widely adopted to automatically build and test every pull-request at the time of submission. CI provides extra evidences relating to the quality of pull-requests, which would help integrators to make final decision(i.e., accept or reject). In this paper, we present a quantitative study that tries to discover which factors affect the process of pull-based development model, including acceptance and latency in the context of CI. Using regression modeling on data extracted from a sample of Git Hub projects deploying the Travis-CI service, we find that the evaluation process is a complex issue, requiring many independent variables to explain adequately. In particular, CI is a dominant factor for the process, which not only has a great influence on the evaluation process per se, but also changes the effects of some traditional predictors.

关键词： pull-request continuous integration Git Hub distributed software development empirical analysis

Fertility Effects of Labor Market Conditions at Graduation

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China & World Economy 2023年第4期31卷 120-152页

作者： yue yin Ye Jiang School of Economics University of BristolUnited Kingdom National School of Agricultural Institution and Development South China Agricultural UniversityChina

This study examines how individuals'fertility outcomes were affected by the labor market conditions they experienced at *** data from the Chinese General Social Survey,it finds that poor labor market conditions at graduation delayed individuals'entry into *** unemployment rates at graduation reduced the probability of having at least one child in the survey year for both men and *** negative fertility effects generally followed a U-shape,reached the maximum around average childbearing ages,and faded out within 15 years after ***-skilled workers mainly contribute to the negative fertility effects observed in the whole *** and marital outcomes are also analyzed as potential *** results indicate that individuals who experienced poor labor market conditions at graduation delayed marriage and the birth of the first child due to a lower probability of being employed,reduced working hours,and adverse income *** negative long-term fertility effects should be brought to policymakers'attention,especially when China's low fertility issue *** are expected to create more favorable employment conditions for labor market entrants to encourage fertility and expand the future working-age population.

关键词： fertility graduation labor market conditions unemployment

Differences of core genes in liver fibrosis and hepatocellular carcinoma:Evidence from integrated bioinformatics and immunohistochemical analysis

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World Journal of Gastrointestinal Oncology 2022年第7期14卷 1265-1280页

作者： yue Li Shou-Li Yuan Jing-Ya yin Kun Yang Xin-Gang Zhou wen Xie Qi Wang Department of Pathology Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Beijing Key Laboratory of Emerging Infectious Diseases Beijing 100015China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyBeijing 100101China Center of Liver Diseases Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

BACKGROUND Liver fibrosis and hepatocellular carcinoma(HCC)are common adverse consequences of chronic liver *** interaction of various risk factors may cause them to *** of specific biomarkers is of great significance for understanding the occurrence,development mechanisms,and determining the novel tools for diagnosis and treatment of both liver fibrosis and *** To identify liver fibrosis-related core genes,we analyzed the differential expression pattern of core genes in liver fibrosis and *** Gene expression profiles of three datasets,GSE14323,GSE36411,and GSE89377,obtained from the Gene Expression Omnibus(GEO)database,were analyzed,and differentially expressed genes(DEGs)between patients with liver cirrhosis and healthy controls were identified by screening via R software packages and online tool for Venn *** WebGestalt online tool was used to identify DEGs enriched in biological processes,molecular functions,cellular components,and Kyoto Encyclopedia of Genes and Genomes *** protein–protein interactions of DEGs were visualized using Cytoscape with ***,the expression pattern of core genes was analyzed using Western blot and immunohistochemistry in a carbon tetrachloride(CCl_(4))-induced liver cirrhosis mouse model and in patient liver ***,Kaplan-Meier curves were constructed using the Kaplan-Meier plotter online *** Forty-five DEGs(43 upregulated and 2 downregulated genes)associated with liver cirrhosis were identified from three GEO *** hub genes were identified,which were upregulated in liver *** blot and immunohistochemical analyses of the three core genes,decorin(DCN),dermatopontin(DPT),and SRY-box transcription factor 9(SOX9),revealed that they were highly expressed in the CCl4-induced liver cirrhosis mouse *** expression levels of DCN and SOX 9 were positively correlated with the degree of fibrosis,and SOX 9 level in HCC patients was significant

关键词： Liver cirrhosis Hepatocellular carcinoma Bioinformatical analysis Decorin Dermatopontin SRY-box transcription factor 9

Synthesis of ruthenium/reduced graphene oxide composites and application for the selective hydrogenation of halonitroaromatics

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Chinese Chemical Letters 2014年第2期25卷 359-363页

作者： Guang-yin Fan wen-Jun Huang Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical Engineering China West Normal University

Reduced graphene oxide （RGO） supported ruthenium （Ru） catalyst was prepared by an impregnation method using RuCI3 as a precursor and RGO as a support. The catalyst Ru/RGO was used for the selective hydrogenation ofp-chloronitrobenzene （p-CNB） to p-chloroaniline （p-CAN）, showing a selectivity of 96% at complete conversion of p-CNB at 60 ℃ and 3.0 MPa H2. The Ru/RGO catalyst was extremely active for the hydrogenation of a series of nitroarenes, which can be attributed to the small sized and the fine dispersity of the Ru nanoparticles on the RGO sheets characterized by TEM. Moreover, the catalyst also can be recycled five times without the loss of activity.

关键词： p-Chloroanfline Hydrogenation Ruthenium Graphene

Synthesis and mesomorphic properties of n-butyl-4- [4-((4-n-alkoxyl-tetrafluorophenyl)ethynyl)benzyloxy]benzoates

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Chinese Journal of Chemistry 1995年第6期13卷 515-519页

作者： wen, JX yin, HY Chen, Q CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA

A homologous series of n-butyl-4-[4-((4-n-alkoxyl-tetrafluorophenyl)ethynyl)benzyloxy] benzoates have been synthesized. Their phase transition temperatures have also measured by polarizing textural observation and con... 详细信息

关键词： liquid crystal synthesis mesomorphic properties

Sequence architecture and sedimentary characteristics of a Middle Jurassic incised valley,western Sichuan depression,China

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Petroleum Science 2018年第2期15卷 230-251页

作者： Jun-Long Liu Wei yin You-Liang Ji Tian-Yun Wang Fu-Xiang Huang Hai-yue Yu wen-Shu Li Sinopec Exploration&Production Research Institute Beijing 100083China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China Xinxing Geophysical Department Bureau of Geophysical ProspectingCNPCZhuozhou 072751HebeiChina Daqing Oil Company CNPCDaqing 163000HeilongjiangChina

The Middle Jurassic Shaximiao Formation encompasses tens of meters of thick lowstand meandering valley （LMV） strata in the western Sichuan foreland basin. Ancient LMVs newly discovered in this area were further studied based on sequence stratigraphy and seismic sedimentology. The aim of the present study was to investigate the sedimentary characteristics, sequence architecture, and the controls on LMV deposition in this tectonically active basin using field survey data, seismic sections, seismic amplitude imaging, core description, and comprehensive application of drilling data. The results show the following：（1） Three regional sequence boundaries and two flooding surfaces were recognized, and the Shaximiao For- mation was divided into two-third-order sequences and four systems tracts. （2） Three sedimentary facies associations were identified： incised valley-fill, tributary channel, and overbank facies. Incised valleys are 5-17 km wide, 20-60 m deep and traceable for 120 km along their axes. （3） In the downstream segment, the role of tectonism gradually diminishes, and periodic base-level changes control the form and evolution of the incised valleys. Three types of LMVs--AI, A2, and A3--developed with changes in base level （lake level）; of these types, the base level of the A3 LMV was likely the lowest.

关键词： Sequence architecture Sedimentary characteristic Lowstand meandering valley Western Sichuandepression Shaximiao Formation