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嗅觉感知下园林植物气味类型、浓度对人生理心理的影响

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林业科学 2025年第1期61卷 126-136页

作者：王可金荷仙曾程程王雁珺王一凡周艳慧浙江农林大学风景园林与建筑学院杭州311300 金华职业技术大学农学院金华321000

【目的】明晰园林植物气味类型和浓度对人身心健康的影响,探究气味刺激下生理反应与主观感受之间的契合度,为后续园林植物气味的人体健康效应研究指标选择提供参考,为科学健康的嗅景营造提供理论依据。【方法】以秋季嗅景中常见的桂花... 详细信息

【目的】明晰园林植物气味类型和浓度对人身心健康的影响,探究气味刺激下生理反应与主观感受之间的契合度,为后续园林植物气味的人体健康效应研究指标选择提供参考,为科学健康的嗅景营造提供理论依据。【方法】以秋季嗅景中常见的桂花花朵、银杏外种皮为气味材料,分别代表积极、消极2种气味类型,通过预试验设定低、高2种气味浓度水平,采用COSMOS XP-329ⅢR便携式气味传感器制备低浓度和高浓度桂花、低浓度和高浓度银杏4组气味材料。招募52名大学生参与试验,采用ErgoLAB、Emotiv Epocx测定其生理指标,以愉悦度量表、熟悉度量表、气味强度量表及气味情绪量表(ScentMove?问卷)收集其主观感知及情绪指标。通过方差分析、非参数检验比较气味类型和浓度对各身心指标的影响差异,再以斯皮尔曼等级相关分析法检验生理指标与心理指标之间的相关性。【结果】1)前测气味强度受气味浓度和类型的影响显著(P0.05),但受气味类型影响均显著(P0.05),受气味类型影响显著(P0.05);θ脑波、低频β(βL)脑波、高频β(βH)脑波受气味浓度影响显著(P0.05);γ脑波则受气味类型、气味类型与气味浓度交互作用的影响显著(P<0.05、P<0.01)。4)在生理指标中,心率变异性的低频与高频能量比(LF/HF)、θ脑波、βL脑波、βH脑波、γ脑波与心理指标的契合度最高。【结论】在主观层面上,不同气味类型的强度感知阈值不同,嗅闻时长会影响人们的气味感知能力;情绪受浓度影响不显著,愉悦度感知是影响情绪体验的主要因素。在生理层面上,自主神经系统对气味浓度不敏感,对积极气味、消极气味反应明显;脑波信号则对气味浓度敏感度较高,高浓度气味会明显抑制脑波活动。总体来看,θ脑波、低频β脑波、高频β脑波、γ脑波、心率变异性的低频与高频能量比(LF/HF)可作为情绪效价研究的有效生理指标。

关键词：植物气味嗅觉感知身心指标气味浓度气味类型

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Changes in Natural Mortality of Atlantic Cod(Gadus morhua) on Eastern Georges Bank

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Journal of Ocean University of China 2016年第5期15卷 879-889页

作者： wang yanjun Fisheries and Oceans Canada St. Andrews Biological Station St. Andrews New Brunswick E5B 2L9 Canada

The assessment of Eastern Georges Bank cod with the assumption of a constant natural mortality of 0.2 has over-estimated stock productivity, resulting in a severe retrospective pattern since the late 2000 s. Comparing relative exploitation rate(ratio of fishery catch at age to survey abundance indices at age) with total mortality calculated from the age distribution in surveys indicated a conflict when constant natural mortality was assumed. This inconsistency implies an increase in natural mortality since the mid-1990 s. In this paper, natural mortality estimated by Virtual Population Analysis(VPA) indicated that natural mortality for this stock has increased to 0.8 since the mid-1990 s for ages 6+. Potential factors contributing to this elevated natural mortality, including poor fish conditions and increased losses due to seal predation were discussed.

关键词： mortality retrospective Gadus morhua Atlantic stock catch elevated assumed abundance Eastern

Effects of tree size and organ age on variations in carbon,nitrogen,and phosphorus stoichiometry in Pinus koraiensis

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Journal of Forestry Research 2024年第3期35卷 155-165页

作者： yanjun wang Guangze Jin Zhili Liu Center for Ecological Research Northeast Forestry UniversityHarbin 150040People's Republic of China Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education Northeast Forestry UniversityHarbin 150040People's Republic of China Northeast Asia Biodiversity Research Center Northeast Forestry UniversityHarbin 150040People's Republic of China

Carbon(C),nitrogen(N),and phosphorus(P)are of fundamental importance for growth and nutrient dynamics within plant organs and deserve more attention at regional to global ***,our knowledge of how these nutrients vary with tree size,organ age,or root order at the individual level remains *** determined C,N,and P contents and their stoichiometric ratios(i.e.,nutrient traits)in needles,branches,and fine roots at different organ ages(0-3-year-old needles and branches)and root orders(1st-4th order roots)from 64 Pinus koraiensis of varying size(Diameter at breast height ranged from 0.3 to 100 cm)in northeast *** factors were also *** results show that nutrient traits were regulated by tree size,organ age,or root order rather than soil *** a whole-plant level,nutrient traits decreased in needles and fine roots but increased in branches with tree *** the organ level,age or root order had a negative effect on C,N,and P and a positive effect on stoichiometric *** results demonstrate that nutrient variations are closely related to organ-specific functions and ecophysiological processes at an individual *** is suggested that the nutrient acquisition strategy by younger trees and organ fractions with higher nutrient content is for ***,nutrient storage strategy in older trees and organ fractions are mainly for steady *** results clarified the nutrient utilization strategies during tree and organ ontogeny and suggest that tree size and organ age or root order should be simultaneously considered to understand the complexities of nutrient variations.

关键词： Tree size Organ age(or root order) Carbon(C) Nitrogen(N) Phosphorus(P) Pinus koraiensis

Secondary trading of airport slots:Issues and challenges

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Chinese Journal of Aeronautics 2023年第12期36卷 1-12页

作者： yanjun wang Mengyin wang Weishan XU Mark HANSEN College of Civil Aviation Nanjing University of Aeronautics and AstronauticsNanjing 210016China Adam Smith Businesses School University of GlasgowGlasgow G128QQUK Department of Civil and Environmental Engineering University of CaliforniaBerkeley 94720USA

Most Level 3 airports around the world suffer severe congestion and flight *** have to obtain airport slots in order to schedule flights at such *** main way for airlines to acquire slots is primary slot allocation,in which a slot coordinator distributes slots to airlines according to certain rules and *** to excessive demand for slots and restrictions on allocation rules,it is difficult for some airlines to obtain the desired slots in this *** way for airlines to obtain slots is through secondary slot trading,in which slots can be redistributed among airlines without being returned to slot *** secondary trading of airport slots has played a positive role in promoting the efficient utilization of slot resources,but systematic studies are *** paper discusses the reasons for the existence of slot secondary trading,sorts out the main policies and rules governing the mechanism,investigates its impacts on the industry and society,and points out the major problems and *** paper provides a reference for subsequent research and practical application of airport slot secondary trading in the future.

关键词： Air traffic management Airport capacity Airport slot allocation Market-based mechanism Secondary slot trading

CKAP2L通过激活Wnt/β-catenin通路促进非小细胞肺癌细胞增殖和上皮-间质转化

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暨南大学学报(自然科学与医学版) 2025年第01期46卷 1-12页

作者：罗雪王艳君袁铭周丁子黎华电子科技大学附属医院//四川省人民医院肾脏科电子科技大学附属医院//四川省人民医院口腔科四川大学华西第四医院//华西公共卫生学院

目的:探究细胞骨架相关蛋白2样蛋白(cytoskeleton-associated protein 2-like, CKAP2L)在非小细胞肺癌(non-small cell lung cancer, NSCLC)细胞增殖、上皮-间质转化(epithelial-mesenchymal transition, EMT)和迁移中的作用及其机制。方法:利用GEO和TCGA数据库筛选与NSCLC相关的潜在基因；用qRT-PCR、Western blot和免疫组化法检测NSCLC组织中CKAP2L的表达水平；用Kaplan-Meier曲线分析NSCLC患者生存率。以CKAP2L shRNAs、过表达质粒或Wnt/β-catenin抑制剂IWR-1处理细胞后，用qRT-PCR和Western blot检测细胞中CKAP2L的表达水平；用CCK-8和EdU染色检测细胞增殖情况；用Transwell检测细胞迁移情况；用Western blot和免疫荧光检测细胞中EMT和Wnt/β-catenin通路蛋白的表达水平。结果:CKAP2L在NSCLC患者肿瘤组织中表达上调(P<0.001),CKAP2L高表达与NSCLC患者预后差相关。与过表达对照组(OE-CTRL)相比，CKAP2L过表达组(OE-CKAP2L)NSCLC细胞增殖(P<0.01或P<0.001)、EMT和迁移(P<0.01)明显增强；与干扰对照组(sh-CTRL)相比，CKAP2L干扰组(sh-CKAP2L)NSCLC细胞增殖(P<0.01或P<0.001)、EMT和迁移(P<0.01)明显减弱。CKAP2L可上调Wnt/β-catenin通路相关蛋白(P<0.01)。结论:CKAP2L可能通过激活Wnt/β-catenin通路而加速NSCLC进展，可能成为治疗NSCLC患者的新靶点。

关键词：非小细胞肺癌细胞骨架相关蛋白2样蛋白上皮-间质转化 Wnt/β-catenin通路

A Hierarchical unsupervised method for power line classification from airborne LiDAR data

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International Journal of Digital Earth 2019年第12期12卷 1406-1422页

作者： yanjun wang Qi Chen Lin Liu Kai Li National-local Joint Engineering Laboratory of Geo-spatial Information Technology Hunan University of Science and TechnologyXiangtanPeople’s Republic of China School of Resource Environment and Safety Engineering Hunan University of Science and TechnologyXiangtanPeople’s Republic of China Department of Geography and Environment University of Hawai’i at MānoaHonoluluHIUSA Department of Geography University of CincinnatiCincinnatiOHUSA School of Geographic Science Center of Geo-Informatics for Public SecurityGuangzhou UniversityGuangzhouPeople’s Republic of China

The automatic classification of power lines from airborne light detection and ranging(LiDAR)data is a crucial task for power supply *** methods for power line classification can be either supervised or *** methods might achieve high accuracy for small areas,but it is time consuming to collect training data over areas of different conditions and ***,unsupervised methods that can automatically work over different areas without sophisticated parameter tuning are in great *** this paper,we presented a hierarchical unsupervised LiDAR-based power line classification method that first screened the power line candidate points(including the power line corridor direction detection based on a layered Hough transform,connectivity analysis,and Douglas–Peucker simplification algorithm),followed by the extraction of contextual linear and angular features for each candidate laser points,and finally by setting the feature threshold values to identify the power line *** tested the method over both forest and urban areas and found that the precision,recall and quality rates were up to 96.7%,88.8%and 78.3%,respectively,for the test datasets and were higher than the ones from a previously developed supervised classification ***,our approach has the advantages of achieving relatively high accuracy and being relatively fast.

关键词： Airborne LiDAR data power lines unsupervised classification feature extraction

Air route network optimization in fragmented airspace based on cellular automata

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Chinese Journal of Aeronautics 2017年第3期30卷 1184-1195页

作者： Shijin wang Xi CAO Haiyun LI Qingyun LI Xu HANG yanjun wang College of Civil Aviation Nanjing University of Aeronautics and Astronautics Air Traffic Control Division Central-south Regional Air Traffic Management Bureau

Air route network optimization,one of the essential parts of the airspace planning,is an effective way to optimize airspace resources,increase airspace capacity,and alleviate air traffic ***,little has been done on the optimization of air route network in the fragmented airspace caused by prohibited,restricted,and dangerous areas（PRDs）.In this paper,an air route network optimization model is developed with the total operational cost as the objective function while airspace restriction,air route network capacity,and non-straight-line factors（NSLF） are taken as major constraints.A square grid cellular space,Moore neighbors,a fixed boundary,together with a set of rules for solving the route network optimization model are designed based on cellular *** empirical traffic of airports with the largest traffic volume in each of the 9 flight information regions in China's Mainland is collected as the origin-destination（OD） airport pair *** on traffic patterns,the model generates 35 air routes which successfully avoids 144 *** with the current air route network structure,the number of nodes decreases by 41.67%,while the total length of flight segments and air routes drop by 32.03% and 5.82% *** NSLF decreases by 5.82% with changes in the total length of the air route *** importantly,the total operational cost of the whole network decreases by 6.22%.The computational results show the potential benefits of the model and the advantage of the *** of air route network can significantly reduce operational cost while ensuring operation safety.

关键词： Air route network planning Airspace restriction Cellular automata Network capacity Optimization of nodes

EFFECT OF Z-PINS’ DIAMETER,SPACING AND OVERLAP LENGTH ON CONNECTING PERFORMANCE OF CMC SINGLE LAP JOINT

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Acta Mechanica Solida Sinica 2008年第5期21卷 461-471页

作者： Yongqiang Tao Guiqiong Jiao Bo wang yanjun Chang School of Mechanics and Civil Construction Northwest Polytechnical University Xi＇an 710072 China

The effect of through-thickness reinforcement by composite pins （Z-pins） on the static tensile strength and failure mechanisms of the joints made from ceramic matrix composite （CMC） is investigated. Overlap length of the single lap joint is 15 mm, 20 mm, 23 mm, 37 mm, and 60 mm, respectively. The experimental results indicate that the final failure modes of the joints can be divided into two groups, （a） the bond-line stops debonding until crack encounters Z-pins; and then the adherends break at the location of Z-pins, when overlap length is more than 20 mm; （b） the bond-line detaches entirely and Z-pins are drawn from adherends, when overlap length is equal to 15 mm. A simple efficient computational approach is presented for analyzing the benefit of through-thickness pins for restricting failure in the single lap joints. Here, the mechanics problem is simplified by representing the effect of the pins by tractions acting on the fracture surfaces of the cracked bond-line. The tractions are prescribed as functions of the crack displacement, which are available in simple forms that summarize the complex deformations to a reasonable accuracy. The resulting model can be used to track the evolution of complete failure mechanisms, for example, bond-line initial delamination and ultimate failure associated with Z-pin pullout, ultimate failure of the adherends. The paper simulates connecting performance of the single lap joints with different Z-pins＇ diameter, spacing and overlap length; the numerical results agree with the experimental results; the numerical results indicate enlarging diameter and decreasing spacing of Z-pins are in favor of improving the connecting performance of the joints. By numerical analysis method, the critical overlap length that lies between two final failure modes is between 18 mm and 19 mm, when Z-pins＇ diameter and spacing are 0.4 mm, 5 mm, respectively.

关键词： ceramic matrix composite (CMC) single lap joint Z-pins connecting performance,overlap length diameter spacing

Empirical analysis of airport network and critical airports

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Chinese Journal of Aeronautics 2016年第2期29卷 512-519页

作者： Cong Wei Hu Minghua Dong Bin wang yanjun Feng Cheng College of Civil Aviation Nanjing University of Aeronautics and Astronautics Nanjing 211106 China National Key Laboratory of Air Traffic Flow Management Nanjing 211106 China The 28th Research Institute of China Electronics Technology Group Corporation Nanjing 210000 China

Air transport network, or airport network, is a complex network involving numerous airports. Effective management of the air transport system requires an in-depth understanding of the roles of airports in the network. Whereas knowledge on air transport network properties has been improved greatly, methods to find critical airports in the network are still lacking. In this paper, we present methods to investigate network properties and to identify critical airports in the network. A novel network model is proposed with airports as nodes and the correlations between traffic flow of airports as edges. Spectral clustering algorithm is developed to classify air- ports. Spatial distribution characteristics and intraclass correlation of different categories of air- ports are carefully analyzed. The analyses based on the fluctuation trend of distance-correlation and power spectrum of time series are performed to examine the self-organized criticality of the net- work. The results indicate that there is one category of airports which dominates the self-organized critical state of the network. Six airports in this category are found to be the most important ones in the Chinese air transport network. The flights delay occurred in these six airports can propagate to the other airports, having huge impact on the operation characteristics of the entire network. The methods proposed here taking traffic dynamics into account are capable of identifying critical air- ports in the whole air transport network.

关键词： Airport network Critical airport Spatial correlation Spectral clustering Power-law distributionPower spectra