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Journal of Contemporary Educational Research 2024年第1期8卷 39-44页

作者： hongjun liu Yun He School of Construction Guangdong Technology CollegeZhaoqing 526070Guangdong ProvinceChina

With the rapid development of information technology,the utilization of building information modeling(BIM)is increasingly prevalent in the construction industry.In order to cultivate BIM application-oriented talents capable of effectively addressing industry development demands,this study proposes a reform plan for BIM courses that integrates post,course,competition,and certificate.The reform plan implements the teaching methods of post-course integration,competition-based teaching integration,and course certificate integration in the BIM course.It also carries out curriculum reform from four aspects:curriculum system,teaching mode,teaching content,and assessment method.Reform should be implemented to enhance students’professional and practical skills,thereby enabling them to secure improved employment opportunities and prospects for career development.

关键词： Post-Course-Competition-Certificate BIM course Teaching reform

Broadband 1T-polytype tantalum disulfide saturable absorber for solid-state bulk lasers

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Photonics Research 2022年第9期10卷 2122-2132页

作者： MENGXIA WANG HAILONG QIU TIANWEN YANG ZHENGPING WANG CHUANRUI ZHAO YUANAN ZHAO TING YU YUYAO JIANG MEILING CHEN YAFEI LIAN GE ZHANG hongjun liu ZHANGGUI HU JIANDA SHAO Laboratory of Thin Film Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Tianjin Key Laboratory of Functional Crystal Materials Institute of Functional CrystalTianjin University of TechnologyTianjin 300384China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China Laboratory of High Power Fiber Laser Technology Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China College of Science Shanghai UniversityShanghai 200444China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China

1T-polytype tantalum disulfide(1T-TaS_(2)),an emerging strongly correlated material,features a narrow bandgap of 0.2 e V,bridging the gap between zero-bandgap graphene and large-bandgap 2D nonlinear optical(NLO)materials.Combined with its intense light absorption,high carrier concentration,and high mobility,1T-TaS_(2) shows considerable potential for applications in broadband optoelectronic devices.However,its NLO characteristics and related applications have rarely been explored.Here,1T-TaS_(2) nanosheets are prepared by chemical vapor deposition.The ultrafast carrier dynamics in the 400–1100 nm range and broadband NLO performance in the 515–2500 nm range are systematically studied using femtosecond lasers.An obvious saturable absorption phenomenon is observed in the visible to IR range.The nonlinear absorption coefficient is measured to be-22.60±0.52 cm MW-1under 1030 nm,which is larger than that of other typical 2D saturable absorber(SA)materials(graphene,black phosphorus,and MoS_(2))under similar experimental conditions.Based on these findings,using 1T-TaS_(2) as a new SA,passively Q-switched laser operations are successfully performed at 1.06,1.34,and 1.94μm.The results highlight the promise of 1T-TaS_(2) for broadband optical modulators and provide a potential candidate material system for mid-IR nonlinear optical applications.

关键词： saturable switched absorber

Geochemical Characteristics and Accumulated Process of Heavy Crude Oil of Chunguang Oilfield in Junggar Basin, China

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Journal of Earth Science 2016年第5期27卷 846-855页

作者： Yuanfang Fan Lianfu Mei hongjun liu Key Laboratory of Tectonics and Petroleum Resources Ministry of Education China University of Geosciences School of Earth Sciences and Engineering Xi’an Shiyou University

Chunguang oilfield is a new focus of the exploration in Junnggar Basin with the heavy crude oil distributing in Jurassic, Cretaceous and Tertiary strata. Based on the analysis of the geochemistry and fluid inclusion in the reservoirs, the source, accumulated period and process of the heavy crude oil reservoir has been investigated. The results indicate that the heavy crude oil can be divided into three types based on the degradation and sources. The heavy crude oil was mainly derived from the Permian source rocks, and latterly mixed by the heavy crude oil generated by the Jurassic source rocks. The accumulated period of the heavy crude oil has two stages. One was ranged from Cretaceous to Paleogene and the heavy crude oil was sourced from Permian source rocks of the Shawan depression and latterly mixed by the heavy crude oil generated by the Jurassic source rocks. The second period was from Neogene to present and the heavy crude oil was mainly derived from the Jurassic source rocks. Combined with the geological evolution, the heavy crude oil accumulated process has been recovered.

关键词： oil-source correlation fluid inclusions accumulated stages accumulated process.

Long-term prognosis and prognostic determinants of patients with first attack of mild and moderate ischemia at Beijing community hospitals

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Neural Regeneration Research 2012年第7期7卷 540-545页

作者： Xianghua Fang Liming Li Xinqing Zhang hongjun liu Hongmei Zhang Xiaoming Qin Department of Epidemiology ＆ Biostatistics School of Public Health Peking University Health Sciences Center Beijing 100191 China Department of Evidence-based Medicine Xuanwu Hospital Capital Medical University Beijing 100053 China Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China Department of Geriatrics Xuanwu Hospital Capital Medical University Beijing 100053 China

A total of 710 patients with first-ever ischemic stroke were consecutively recruited between January 2003 and December 2004 from five community hospitals/stations in five districts of Beijing, China. As of December 31, 2008, a total of 2 477 person-years were followed-up. During the five-year follow-ups, 117 adverse events occurred, including all-cause death and acute cardiovascular events （recurrent stroke, acute myocardial infarction, and sudden death）. The five-year cumulative mortality rate was 2.18/100 person-years （54 cases）, with 3.88/100 person-years （96 cases） of acute cardiovascular events and 3.02/100 person-years （75 cases） of recurrent stroke. Multiple factor analyses using the Cox proportional hazards ratio models showed that age, diabetes, and dependence of activities of daily living were independent predictors for death, acute cardiovascular disease events, or recurrent stroke. The results demonstrated that recurrent stroke was a major vascular disease that affected the prognosis of mild or moderate stroke patients. Secondary prevention of stroke patients should include active management of vascular risk factors and rehabilitation.

关键词： ischemic stroke follow-up study predictors prognosis recurrent stroke survival

Acute and chronic toxic effects of Pb^(2+)on polychaete Perinereis aibuhitensis:Morphological changes and responses of the antioxidant system

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Journal of Environmental Sciences 2014年第8期26卷 1681-1688页

作者： Yulu Tian hongjun liu Qixiang Wang Jian Zhou Xuexi Tang College of Marine Life Sciences Ocean University of China Marine Biology Institute of Shangdong Province

Perinereis aibuhitensis was used to assess adverse biological effects caused by acute and chronic Pb2＋exposure in artificial seawater under controlled laboratory conditions. In 96-hr acute toxicity experiments,the morphological changes showed a positive time/dose-dependent tendency,and the 96-hr LC50 value of Pb2＋was 686.41 mg/L. The responses of enzymatic and non-enzymatic antioxidants in tissues including catalase（CAT）,peroxidase（POD）,superoxide dismutase（SOD）,glutathione peroxidase（GSH-PX）,malondialdehyde（MDA） and the content of total soluble protein（TSP）,were investigated on days 1,4,7 and 10 after Pb2＋exposure under chronic toxicity testing. Results showed that the activation of the antioxidant system in P. aibuhitensis depended on the Pb2＋concentration and the duration of exposure time.Specifically,POD and SOD activities were induced on the first day of the exposure and decreased to the control level on day 10 after exposure. Therefore,these two indexes could be used to indicate oxidative stress associated with P. aibuhitensis exposure to Pb2＋.

关键词： Perinereis aibuhitensis,Toxicity,Antioxidant system,Pb2＋

基于数字孪生的航空壁板制孔位置实时监控研究

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机床与液压 2024年第2期52卷 34-41页

作者：刘红军邵泓斌沈阳航空航天大学机电工程学院辽宁沈阳110136

航空壁板盲制孔过程中,因受夹具装夹的影响,壁板产生一定量的变形。为了能够实时获取并显示壁板变形后的制孔位置数据,驱动机械臂到达精确的制孔位置,基于“虚实结合,以虚控实”的思想,提出一种基于数字孪生的航空壁板制孔位置实时监控... 详细信息

航空壁板盲制孔过程中,因受夹具装夹的影响,壁板产生一定量的变形。为了能够实时获取并显示壁板变形后的制孔位置数据,驱动机械臂到达精确的制孔位置,基于“虚实结合,以虚控实”的思想,提出一种基于数字孪生的航空壁板制孔位置实时监控系统。搭建基于数字孪生的五自由度机械臂制孔状态监控系统结构模型,阐述系统的架构;对数字孪生系统框架的关键技术进行分析;最后,以实际五自由度机械臂制孔为例,对搭建的数字孪生制孔系统的可靠性进行验证。结果表明:该数字孪生制孔系统具有良好的稳定性与有效性。

关键词：数字孪生制孔状态实时监控三维可视化

Research on Image Quality Enhancement Algorithm Using Hessian Matrix

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Journal of New Media 2022年第3期4卷 117-123页

作者： Xi Chen Yanpeng Wu Chenxue Zhu hongjun liu China Mobile Group Henan Co. Ltd.Zhengzhou450000HenanChina Department of Information Science and Engineering Hunan First Normal UniversityChangsha410205HunanChina Department of Information Engineering Shaoyang UniversityShaoyang422000HunanChina

The Hessian matrix has a wide range of applications in image processing,such as edge detection,feature point detection,etc.This paper proposes an image enhancement algorithm based on the Hessian matrix.First,the Hessian matrix is obtained by convolving the derivative of the Gaussian function.Then use the Hessian matrix to enhance the linear structure in the image.Experimental results show that the method proposed in this paper has strong robustness and accuracy.

关键词： Hessian matrix Gaussian function image enhancement linear structure

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近代中国武术“学科意识”的觉醒

西安体育学院学报 2024年第2期41卷 261-270页

作者：刘红军白俊亚戴国斌上海政法学院警务学院上海201701 邯郸学院太极文化学院邯郸056005 上海体育大学武术学院上海200438

在近代学术转型背景下产生的分科治学思想,重组了武术知识,形塑了近代武术的学科意识。作为对学科的认识与理解,武术的学科意识在近代学术转型与分科治学背景下,借助报刊、议决案反复言说与教育活动的不断实践,在尝试将武术知识推介为... 详细信息

在近代学术转型背景下产生的分科治学思想,重组了武术知识,形塑了近代武术的学科意识。作为对学科的认识与理解,武术的学科意识在近代学术转型与分科治学背景下,借助报刊、议决案反复言说与教育活动的不断实践,在尝试将武术知识推介为教学内容的过程中,激发了武术由教学而学术的知识转型。在武术知识转型中,在中央与地方的学科认知互动中,在解纾学科建构之困中,在由教学而学术的转捩中,武术的学科意识逐渐觉醒。近代武术学科意识的觉醒,使武术知识获得新的书写方式,成为学校体育中的重要一环,折射出了西风东渐之后国人的文化自觉,也为当前民族传统体育的中国式现代化发展提供历史经验。

关键词：武术学科学科意识学科体系

DNDC模型耦合遥感技术的保护性耕作下土壤有机碳模拟

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农业工程学报 2024年第9期40卷 108-118页

作者：刘泓君许昭辉周永馨孙君龄万炜刘忠中国农业大学土地科学与技术学院北京100193 华北耕地保育农业农村部重点实验室北京100193 南昌大学资源与环境学院鄱阳湖环境与资源利用教育部重点实验室南昌330031

不同耕作措施会改变土壤有机碳储量,影响农田生态系统的碳收支。揭示自实行保护性耕作以来农田土壤有机碳的响应规律,对增加土壤碳库具有重要意义。该研究基于遥感反演技术耦合DNDC(denitrification-decomposition)模型,从县域和栅格尺... 详细信息

不同耕作措施会改变土壤有机碳储量,影响农田生态系统的碳收支。揭示自实行保护性耕作以来农田土壤有机碳的响应规律,对增加土壤碳库具有重要意义。该研究基于遥感反演技术耦合DNDC(denitrification-decomposition)模型,从县域和栅格尺度,精细刻画保护性耕作下2000-2020年吉林省土壤有机碳密度(soil organic carbon density,SOCD)的空间分布格局,并模拟不同秸秆还田情景下SOCD增长潜力。结果表明:1)20 a间土壤有机碳储量由6.08×10^(8)t增加到1.22×10^(9)t,增量主要与耕地面积扩大相关。县域尺度SOCD在4.46~98.09 t/hm^(2),栅格尺度SOCD在3.34~139.2 t/hm^(2),呈现中高北低的格局。2)保护性耕作对表层土的影响更大,0~10 cm土层的SOCD增长率最高达4.4%,>10~20 cm土层增长率最高为0.09%。3)吉林西南及中部具有巨大的SOCD增长潜力,达0.24~0.57 t/hm^(2)。研究结果可为保护性耕作政策制定提供科学参考。

关键词：秸秆遥感碳 DNDC模型情景模拟有机碳密度吉林省

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1例SAPHO综合征的诊治思考

中华全科医师杂志 2024年第7期23卷 778-780页

作者：付瑶刘春梅刘红军北京交通大学社区卫生服务中心超声科北京100044 北京交通大学社区卫生服务中心全科北京100044

SAPHO综合征是一种少见的以皮肤和骨关节慢性无菌性炎症改变为临床表现的一组症候群,临床少见,表现多样,病程反复迁延,易漏诊、误诊。报道1例SAPHO综合征患者的诊治经过,分析其临床资料,找出未能及时确诊的原因,提示基层医生对该类疾病... 详细信息

SAPHO综合征是一种少见的以皮肤和骨关节慢性无菌性炎症改变为临床表现的一组症候群,临床少见,表现多样,病程反复迁延,易漏诊、误诊。报道1例SAPHO综合征患者的诊治经过,分析其临床资料,找出未能及时确诊的原因,提示基层医生对该类疾病引起重视,提升诊断能力。

关键词：关节痛皮疹 SAPHO综合征