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13篇 您的检索式:作者名="LIU Haimeng"
    题名 作者 年代 出处 被引量
1交互联合上的国际进步和评估在都市化和 eco 环境之间完成显示文摘全球都市化正在施加严重应力并且在 eco 环境上有影响深远的影响,并且还在那里存在在二之间的一种复杂非线性的联合关系。关于在都市化和 eco 环境之间的交互联合效果的研究将在下一 10 年里在国际地球系统科学和可持续性科学是学习和边疆的一个流行区域,当也是到国际组织的特别兴趣的一个高优先级的研究话题时。这篇论文系统地对照并且总结在关于交互联合理论的研究取得的国际进步,联合机制,联合法律,联合阀值,联合模型并且联合优化决定支持系统,联合关系。研究显示出交互联合理论包括的那都市化和 eco 环境 Kuznets 曲线理论, telecoupling 理论,行星的边界理论,脚印家庭理论和城市的新陈代谢理论;关于交互联合关系的大多数研究关心单身者 -- 元素联合关系,例如那些在都市化和水之间,土地,空气,气候变化,生态系统和生物多样性;关于交互联合机制和法律的研究的多数集中于五个研究范例,包括联合的人和自然开发和 eco 环境限制包围的系统,复杂聚会生态的系统,城市的生态系统, social-economic-natural 建筑群生态系统,和都市化;交互联合模拟使用 STIRPAT 的多数当模特儿,联合城市的计算机建模的度模型,多代理人系统模型和大数据;并且研究在联合阀值,强制风险和最佳的决定支持的都市化和 eco 环境上被执行了系统。在关于在都市化和 eco 环境之间的交互联合的国际研究的进步的客观评估建议有缺乏的焦点的点和六个区域研究的六主要研究:很多研究在宏观的联合效果上存在,与关于联合效果的城市的凝块和规模的很少研究;可观的研究在单个尺寸的联合效果上存在,与多重尺寸的联合效果上的很少;很多存在在上一对一双 -- 元素联合效果,与 many-to-many 上的很少,多重元素的联合完成;很多在在联合效果的否定反馈上联合效果,和很少的积极反馈上存在;很多在实验联合效果上存在,并且理论联合上的很少完成;很多在使用综合模拟方法上在简单量的方法,和很少的使用上存在。未来研究应该集中于在城市的凝块和 eco 环境联合在都市化之间的效果,空间规模联合效果,多维的联合效果, telecoupling 效果,一对多并且 many-to-many 元素联合效果,和积极、否定的反馈联合效果。也有需要为多元素, -scale,-scenario, 模块和代理人加强动态模型的开发和应用程序综合空间与时间的联合系统并且进一步在联合效果研究改进理论革新并且集成并且形成完全、多样的联合理论系统。FANG Chuanglin LIU Haimeng LI Guangdong 2016Journal of Geographical Sciences2016,26,8:28
2Analysis of factors related to non-sentinel lymph node metastasis in 296 sentinel lymph node-positive Chinese breast cancer patients显示文摘Objective: Axillary lymph node dissection(ALND) may be unnecessary in 20%–60% of breast cancer patients with sentinel lymph node(NSLN) metastasis. The aim of the present study was to review the medical records of Chinese patients with early-stage breast cancer and positive NSLN metastasis to identify clinicopathological characteristics as risk factors for non-NSLN metastasis.Methods: The medical records of 2008 early-stage breast cancer patients who received intraoperative sentinel lymph node biopsy(SLNB) between 2006 and 2016 were retrospectively reviewed. These patients were clinically and radiologically lymph nodenegative and had no prior history of receiving neoadjuvant chemotherapy or endocrinotherapy. The clinicopathological characteristics of patients with positive NSLN metastasis who underwent ALND were investigated.Results: In the present study, 296 patients with positive NSLN metastases underwent ALND. Positive non-NSLN metastases were confirmed in 95 patients(32.1%). On univariate analysis, ≥ 3 positive NSLN metastases(P <0.01), NSLN macrometastases(P =0.023), and lymphovascular invasion(P = 0.04) were associated with non-NSLN metastasis(P <0.05). In multivariate analysis, the number of positive SLNs was the most significant predictor of non-SLN metastasis. For patients with 0, 1, 2, or 3 associated risk factors, the non-SLN metastatic rates were 11.5%, 22.5%, 35.2%, and 73.1%, respectively.Conclusions: The number of positive NSLNs, NSLN macrometastases, and lymphovascular invasion were correlated with nonSLN metastasis. The number of positive SLNs was an independent predictor for non-NSLN metastasis. When 2 or 3 risk factors were present in one patient, the probability of non-NSLN was higher than that in the American College of Surgeons Oncology Group Z0011 trial(27.3%); thus, avoiding ALND should be considered carefully.Amina Maimaitiaili Di Wu Zhenyu Liu Haimeng Liu Xiamusiye Muyiduli Zhimin Fan 2018Cancer Biology & Medicine2018,15,3:17
3New-type urbanization in China: Predicted trends and investment demand for 2015-2030显示文摘The future development of new-type urbanization has drawn great attention from both the government and public alike. In this context, the present study had three related research aims. Firstly, it sought to predict the urbanization and population dynamics in China at both national and provincial levels for the period of 2015 to 2030. Secondly, on this basis, it sought to examine the spatial variation of urbanization given the predicted national urbanization rate of 70.12%. Thirdly, it sought to estimate and evaluate the national and provincial demands of investment in the development of new-type urbanization. The main conclusions from this study were as follows:(1) The population size and urbanization rate will reach 1.445 billion and 70.12%, respectively, from 2015 to 2030.(2) The demographic dividend will vanish when the population pressure reaches its maximum. During this period, there will be 70.16 million urban population born. The suburban population that becomes urbanized will be 316.7 million, and thus the net increase in urban population will reach 386 million.(3) Although the urbanization rate of every Chinese province will increase during 2015–2030, it will do so unequally, while differences in urbanization quality among provinces will also be substantial. In some provinces, moreover, the urbanization quality is not compatible with their eco-social development.(4) A total of 4,105,380 billion yuan is required to fund new-type urbanization and the investment demand for each province varies greatly; for example, Guangdong province requires the most funding, amounting to approximately 148 times that required by Tibet, the province in least need of funding. In the final part of this study, policy suggestions concerning the investment of the new-type urbanization are put forward and discussed.SUN Dongqi ZHOU Liang LI Yu LIU Haimeng SHEN Xiaoyan WANG Zedong WANG Xixi 2017Journal of Geographical Sciences2017,27,8:9
4Process and proposal for comprehensive regionalization of Chinese human geography显示文摘The comprehensive regionalization of Chinese human geography is based on the rules governing regional differentiation of Chinese physical geographic factors. Based on regional differences and similarities in human factors, this study divides the whole country into two levels of relatively independent, complete and organically linked human geographic units. As a fundamental, comprehensive, cutting-edge, practical and important task, the comprehensive regionalization of human geography highlights the characteristics, regional and sub-regional features, complexity and variety of spatial differences between factors of Chinese human geography. It is capable of promoting the development of human geography based on local conditions, providing basic scientific support to national and local development strategies, such as the Belt and Road Strategy, new urbanization and environmental awareness, and creating a sound geopolitical environment in key areas. Using results from existing physical and human geographic zoning studies, and in accordance with the principles of synthesis, dominant factors, the relative consistency of the natural environment, the relative consistency of social and economic development, the consistency of the regional cultural landscape, the continuity of spatial distribution and the integrity of county-level administrative divisions, and taking as its basis the division of human geography into 10 major factors(nature, economy, population, culture, ethnicity, agriculture, transportation, urbanization, the settlement landscape and administrative divisions), this paper constructs an index system for the comprehensive regionalization of Chinese human geography through a combination of top-down and bottom-up zoning and spatial clustering analysis. In this study, Chinese human geography is divided into eight regions and 66 sub-regions. The eight human geography regions are(Ⅰ) Northeast China,(Ⅱ) North China,(Ⅲ) East China,(Ⅳ) Central China,(Ⅴ) South China,(Ⅵ) Northwest China,(Ⅶ) Southwest China, and(Ⅷ) Qinghai and Tibet. This zoning proposal fills gaps in studies involving the non-comprehensive regionalization of Chinese human geography. Each human geography region and sub-region has different topographical, climatic, ecological, population, urbanization, economic development, settlement landscape, regional cultural and ethno-religious attributes. This proposal on the comprehensive regionalization of Chinese human geography dovetails closely with previous studies on comprehensive regionalization in Chinese physical geography, Chinese economic zoning, and Chinese agricultural zoning. It shows that, under the dual roles of nature and humans, there are certain rules of regional differentiation that govern the comprehensive regionalization of Chinese human geography.FANG Chuanglin LIU Haimeng LUO Kui YU Xiaohua 2017Journal of Geographical Sciences2017,27,10:7
5A Novel System for Moving Object Detection Using Bionic Compound Eyes显示文摘Huabo Sun Haimeng Zhao Peter Mooney Hongying Zhao Daping Liu Lei Yan 2011Journal of Bionic Engineering2011,8,3:6
6Quantifying urbanization levels on the Tibetan Plateau with high-resolution nighttime light data显示文摘The Tibetan Plateau(TP)is undergoing rapid urbanization.To improve urban sustainability and construct eco-logical security barriers,it is essential to quantify the spatial patterns of urbanization level on the TP,but the existing studies on the topic have been limited by the lack of socioeconomic data.This study aims to quantify the urbanization level on the TP in 2018 with Luojia1-01(LJ1-01)high-resolution nighttime light(NTL)data.Specifically,the compounded night light index is used to quantify spatial patterns of urbanization level at mul-tiple scales.The results showed that the TP had a low overall urbanization level with a large internal difference.The urbanization level in the northeast,southeast and south of the TP was relatively high,forming three hotspots centered in Xining City,Lhasa City and Shangri-La City,while the urbanization level in the central and western regions was relatively low.The analysis of influencing factors,based on the random forest model,showed that transportation and topography were the main factors affecting the TP’s spatial patterns of urbanization level.The comparison analysis with socioeconomic statistics and traditional NTL data showed that LJ1-01 NTL data can be used to more effectively quantify the urbanization level since it is more advantageous for reflecting the spatial extent of urban land and describing the spatial structure of socioeconomic activities within urban areas.These advantages are attributed to the high spatial resolution of the data,appropriate imaging time and unaf-fected by saturation phenomena.Thus,the proposed LJ1-01 NTL-based urbanization level measurement method has the potential for wide applications around the world,especially in less-developed regions lacking statistical data.Using this method,we refined the measurement of the TP’s urbanization level in 2018 for multiple scales including the region,basin,prefecture and county levels,which provides basic information for the further urban sustainability research on the TP.Yihang Wang Zhifeng Liu Chunyang He Pei Xia Ziwen Liu Haimeng Liu 2020Geography and Sustainability2020,1,3:5
7Microlens Light Field Imaging Method Based on Bionic Vision and 3-3 Dimensional Information Transforming显示文摘his paper adopts the 3-3-2 information processing method for the capture of moving objects as its premise, and proposes a basic principle of three-dimensional (3D) imaging using biological compound eye. Traditional bionic vision is limited by the available hardware. Therefore, in this paper, the new-generation technology of microlens-array light-field camera is proposed as a potential method for the extraction of depth information from a single image. A significant characteristic of light-field imaging is that it records intensity and directional information from the lights entering the camera. Herein, a refocusing method using light-field image is proposed. By calculating the focusing cost at different depths from the object, the imaging plane of the object is determined, and a depth map is constructed based on the position of the object’s imaging plane. Compared with traditional light-field depth estimation, the depth map calculated by this method can significantly improve resolution and does not depend on the number of light-field microlenses. In addition, considering that software algorithms rely on hardware structure, this study develops an imaging hardware that is only 7 cm long based on the second-generation microlens camera’s structure, further validating its important refocusing characteristics. It thereby provides a technical foundation for 3D imaging with a single camera.Shoujiang ZHAO Fan LIU Peng YANG Hongying ZHAO Anand ASUNDI Lei YAN Haimeng ZHAO 2019Journal of Geodesy and Geoinformation Science2019,2,2:4
8Characteristics and Driving Forces of Spatial Expansion of Oasis Cities and Towns in Hexi Corridor, Gansu Province, China显示文摘This paper presents an integrated study of urban spatial expansion in the Hexi Corridor, Gansu Province, China based on TM, ETM remote sensing data in 1987, 1990, 1995, 2000, 2006 and 2011. The study explores the characteristics of urban spatial expansion and dynamic mechanism by using expansion speed index, expansion intensity index, compact index, fractal dimension, and extended flexibility index. We built the index system of influencing factors of urban spatial expansion by using the grey incidence model. The results showed that urban spatial expansion rate in the Hexi Corridor has been on the upward trend since 1987. Expansion intensity showed an obvious upward trend, however, the upward trend varied in different urban areas. In addition, the urban structure was loose relatively, but the urban compactness was more obvious. The urban spatial form tended to be simple, and the urban land use tended to become more intensive. Urban spatial expansion experienced several stages: padding internally, external expansion and padding internally. The main driving factors of urban spatial expansion are not the urban water resources and the oasis scale, but one or several factors such as economy, traffic, population, resource and national policy.LIU Hailong SHI Peiji TONG Huali ZHU Guofeng LIU Haimeng ZHANG Xuebin WEI Wei WANG Xinmin 2015Chinese Geographical Science2015,25,2:3
9Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda显示文摘The fall armyworm(FAW),Spodoptera frugiperda,is a destructive pest native to America and has recently become an invasive insect pest in China.Because of its rapid spread and great risks in China,understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management strategies.Here,we assembled a chromosome-level genome of a male FAW(SFynMstLFR)and compared re-sequencing results of the populations from America,Africa,and China.Strain identification of 163 individuals collected from America,Africa and China showed that both C and R strains were found in the American pop-ulations,while only C strain was found in the Chinese and African populations.Moreover,population geno-mics analysis showed that populations from Africa and China have close relationship with significantly genetic differentiation from American populations.Taken toge-ther,FAWs invaded into China were most likely origi-nated from Africa.Comparative genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW,of which 283 genes are specific to FAW.Treatments of Chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles,and several detoxification genes such as AOX,UGT and GST spe-cially responded to the pesticides.These findings will be useful in developing effective strategies for manage-ment of FAW in China and other invaded areas.Furong Gui Tianming Lan Yue Zhao Wei Guo Yang Dong Dongming Fang Huan Liu Haimeng Li Hongli Wang Ruoshi Hao Xiaofang Cheng Yahong Li Pengcheng Yang Sunil Kumar Sahu Yaping Chen Le Cheng Shuqi He Ping Liu Guangyi Fan Haorong Lu Guohai Hu Wei Dong Bin Chen Yuan Jiang Yongwei Zhang Hanhong Xu Fei Lin Bernard Slippers Alisa Postma Matthew Jackson Birhan Addisie Abate Kassahun Tesfaye Aschalew Lemma Demie Meseret Destaw Bayeleygne Dawit Tesfaye Degefu Feng Chen Paul K.Kuria Zachary M.Kinyua Tong-Xian Liu Huanming Yang Fangneng Huang Xin Liu Jun Sheng Le Kang 2022Protein & Cell2022,13,7:2
10Illustrating the multi-stakeholder perceptions of environmental pollution based on big data:Lessons from China显示文摘The relationship between stakeholders and the environment influences sustainable development and human wellbeing.To illustrate the multi-stakeholder perceptions of environmental pollution in China,we interpreted a feedback loop in the perception-behavior-environment nexus from the perspective of the coupled human-environment system,measured the differences of environmental perceptions among five stakeholders(the public,government,media,companies,and scientists)and regions(including 31 provinces,autonomous regions,and municipalities in China,with exceptions of Taiwan of China,Hong Kong of China,and Macao of China due to a lack of data)using big data,and made a comparison between the perceptions and the actual pollution situation.The results showed that the five stakeholders exhibited similar perceptions of environmental pollution at the national scale,with air pollution being of most concern,followed by water pollution and soil pollution.There were significant spatial differences in environmental perceptions.All stakeholders in the developed regions in eastern China paid relatively high attention to environmental issues,while those in the northwestern regions paid much less attention.There existed a mutual influence and interaction among the different stakeholders.More attention should be paid to air pollution in Xinjiang Uygur Autonomous Region and Ningxia Hui Autonomous Region,water pollution in Hainan Province,Inner Mongolia Autonomous Region,Heilongjiang Province,and Jilin Province,and soil pollution in Hainan Province,Fujian Province,and Jilin Province.This paper provides a research paradigm on multi-stakeholder environmental perceptions based on big data,and the results provide a background reference for regional environmental governance.LIU Haimeng LIU Huaming CHENG Yi 2022Regional Sustainability2022,3,1:1
11Viral receptor profiles of masked palm civet revealed by single-cell transcriptomics显示文摘Civets are small mammals belonging to the family Viverridae.The masked palm civets(Paguma larvata)served as an intermediate host in the bat-to-human transmission of severe acute respiratory syndrome coronavirus(SARS-Co V)in 2003(Guan et al.,2003).Because of their unique role in the SARS outbreak,civets were suspected as a potential intermediate host of SARS-Co V-2.Peiwen Ding Haoyu Wang Jiacheng Zhu Fuyu An Jinqian Xu Xiangning Ding Lihua Luo Weiying Wu Qiuyu Qin Yanan Wei Wandong Zhao Zhiyuan Lv Haimeng Li Yixin Zhu Meiling Li Wensheng Zhang Yanan Zhang Zhihua Ou Huan Liu Yan Hua 2022Journal of Genetics and Genomics2022,49,11:0
12A review of China's Urban Agglomerations显示文摘Since the 1980s,China has been developing rapidly and has gradually become a global manufacturer.During this period,industry and population began to concentrate in Beijing,Yangtze River Delta,Pearl River Delta,and other regions of China.In these regions,more urban agglomerations have started forming and growing,which have been constantly attracting resources,capital,and talents(the'straw effect').LIU Haimeng 2020Journal of Geographical Sciences2020,30,7:0
13Distinct and shared endothermic strategies in the heat producing tissues of tuna and other teleosts显示文摘Although most fishes are ectothermic,some,including tuna and billfish,achieve endothermy through specialized heat producing tissues that are modified muscles.How these heat producing tissues evolved,and whether they share convergent molecular mechanisms,remain unresolved.Here,we generated a high-quality genome from the mackerel tuna(Euthynnus affinis)and investigated the heat producing tissues of this fish by single-nucleus and bulk RNA sequencing.Compared with other teleosts,tuna-specific genetic variation is strongly associated with muscle differentiation.Single-nucleus RNA-seq revealed a high proportion of specific slow skeletal muscle cell subtypes in the heat producing tissues of tuna.Marker genes of this cell subtype are associated with the relative sliding of actin and myosin,suggesting that tuna endothermy is mainly based on shivering thermogenesis.In contrast,cross-species transcriptome analysis indicated that endothermy in billfish relies mainly on nonshivering thermogenesis.Nevertheless,the heat producing tissues of the different species do share some tissue-specific genes,including vascular-related and mitochondrial genes.Overall,although tunas and billfishes differ in their thermogenic strategies,they share similar expression patterns in some respects,highlighting the complexity of convergent evolution.Baosheng Wu Xueli Gao Mingling Hu Jing Hu Tianming Lan Tingfeng Xue Wenjie Xu Chenglong Zhu Yuan Yuan Jiangmin Zheng Tao Qin Peidong Xin Ye Li Li Gong Chenguang Feng Shunping He Huan Liu Haimeng Li Qing Wang Zhenhua Ma Qiang Qiu Kun Wang 2023Science China(Life Sciences)2023,66,11:0
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