An Exploration of the Three Dimensions and Epochal Strengths of Building a Human Community With a Shared Future

The idea of a human community with a shared future was proposed by the Communist Party of China(CPC)Central Committee with Comrade Xi Jinping at its core for the future development of human beings to face up to the most important question in today's world:“What is happening to the world and what should we do?”It profoundly answers the question of the world,history,and the times.The theory of a human community with a shared future is an innovative theory with a multidimensional formation logic that guides humanity toward continually seeking common interests and values.This paper dives into the profound motivations behind building a human community with a shared future from historical,cultural,and practical dimensions and analyzes its epochal value from both domestic and international perspectives.This not only helps exert China's role in the international community,contributing Chinese strength to the construction of a peaceful,stable,and prosperous human society,but also enhances the influence of the idea of a human community with a shared future in the international community,accelerating the building of a human community with a shared future that considers the legitimate concerns of all countries,and aiding in solving the crises facing the world.

Rectangular tunnel heading stability in three dimensions and its predictive machine learning models

Tunnel heading stability in two dimensions(2D)has been extensively investigated by numerous scholars in the past decade.One significant limitation of 2D analysis is the absence of actual tunnel geometry modeling with a considerable degree of idealization.Nevertheless,it is possible to study the stability of tunnels in three dimensions(3D)with a rectangular shape using finite element limit analysis(FELA)and a nonlinear programming technique.This paper employs 3D FELA to generate rigorous solutions for stability numbers,failure mechanisms,and safety factors for rectangular-shaped tunnels.To further explore the usefulness of the produced results,multivariate adaptive regression spline(MARS)is used for machine learning of big dataset and development of design equations for practical design applications.The study should be of great benefit to tunnel design practices using the developed equations provided in the paper.

磁刺激下Fe_(3)O_(4)@ZIF-8纳米颗粒影响骨髓间充质干细胞的成骨分化

背景:骨髓间充质干细胞在组织工程和骨再生中具有重要作用,然而如何促进骨髓间充质干细胞的成骨分化仍然是一个挑战。目的:探讨磁刺激下Fe_(3)O_(4)@ZIF-8纳米颗粒对骨髓间充质干细胞成骨分化的影响。方法:采用水热法合成沸石咪唑酯骨架(ZIF-8),采用一锅法合成具有磁性的Fe_(3)O_(4)@ZIF-8纳米颗粒(材料制备中分别加入2.5,5,10,20μg的Fe_(3)O_(4)),通过扫描电镜、X射线光电子能谱、X射线衍射、振动样品磁强计检测等对Fe_(3)O_(4)@ZIF-8纳米颗粒进行表征,筛选出合适的材料进行后续实验。提取4周龄SD大鼠骨髓间充质干细胞,分别与不同质量浓度(25,50,75,100,125μg/mL)的Fe_(3)O_(4)@ZIF-8纳米颗粒溶液共培养,CCK-8法检测细胞增殖,筛选出最佳的材料溶液质量浓度;筛选出材料溶液质量浓度后,施加磁刺激(磁场强度分别为0,50,100,150 MT),CCK-8法检测细胞增殖,筛选出最佳的磁场强度与Fe_(3)O_(4)@ZIF-8纳米颗粒,用于骨髓间充质干细胞诱导分化实验。将SD大鼠骨髓间充质干细胞分别与ZIF-8、Fe_(3)O_(4)@ZIF-8、Fe_(3)O_(4)@ZIF-8(磁场干预)纳米颗粒溶液共培养,以单独培养的细胞为空白对照,成脂诱导后进行油红O染色,成骨诱导后进行碱性磷酸酶、茜素红染色与Runx2蛋白质量浓度检测。结果与结论:(1)扫描电镜下可见Fe_(3)O_(4)@ZIF-8纳米颗粒呈现十二面体结构,随着材料中Fe_(3)O_(4)含量的增加,纳米颗粒的粒径增大,选择粒径约250 nm(该粒径下的纳米颗粒功能性及生物安全性较稳定)的Fe_(3)O_(4)@ZIF-8纳米颗粒(材料制备中分别加入5,10μg的Fe_(3)O_(4))进行后续实验。(2)CCK-8检测结果显示,在100MT磁场作用下,50μg/mL的Fe_(3)O_(4)@ZIF-8纳米颗粒(材料制备中加入10μg的Fe_(3)O_(4))能够显著促进骨髓间充质干细胞的增殖,选择该条件下的纳米颗粒进行骨髓间充质干细胞成骨诱导分化实验。(3)成骨诱导后,Fe_(3)O_(4)@ZIF-8(磁场干预)组骨髓间充质干细胞的碱性磷酸酶活性、细胞外基质矿化程度与Runx2蛋白质量浓度均高于其他3组(P<0.05);成脂诱导后,Fe_(3)O_(4)@ZIF-8(磁场干预)组骨髓间充质干细胞的脂滴形成少于其他3组(P<0.05)。(4)结果表明,在特定的磁场条件下Fe_(3)O_(4)@ZIF-8纳米颗粒可以促进骨髓间充质干细胞的成骨分化。

Two‑Dimensional Cr_(5)Te_(8)@Graphite Heterostructure for Efficient Electromagnetic Microwave Absorption

Two-dimensional(2D)transition metal chalcogenides(TMCs)hold great promise as novel microwave absorption materials owing to their interlayer interactions and unique magnetoelectric properties.However,overcoming the impedance mismatch at the low loading is still a challenge for TMCs due to the restricted loss pathways caused by their high-density characteristic.Here,an interface engineering based on the heterostructure of 2D Cr_(5)Te_(8) and graphite is in situ constructed via a one-step chemical vapor deposit to modulate impedance matching and introduce multiple attenuation mechanisms.Intriguingly,the Cr_(5)Te_(8)@EG(ECT)heterostructure exhibits a minimum reflection loss of up to−57.6 dB at 15.4 GHz with a thin thickness of only 1.4 mm under a low filling rate of 10%.The density functional theory calculations confirm that the splendid performance of ECT heterostructure primarily derives from charge redistribution at the abundant intimate interfaces,thereby reinforcing interfacial polarization loss.Furthermore,the ECT coating displays a remarkable radar cross section reduction of 31.9 dB m^(2),demonstrating a great radar microwave scattering ability.This work sheds light on the interfacial coupled stimulus response mechanism of TMC-based heterogeneous structures and provides a feasible strategy to manipulate high-quality TMCs for excellent microwave absorbers.

The Historical Position and Value Dimensions of Human Rights Civilization

Human beings are the mainstay and the ultimate goal of civilization.The history of human civilization is a continuous struggle to realize the respect,liberation,protection,and development of humanity.Human rights are an achievement of humanity and a symbol of progress,and the human rights civilization is an important component of human civilization.Understanding and interpreting human rights from the perspective of human rights civilization means that human rights are not only a concept or an idea but also a grand historical and long-term social practice.Up to now,the development of human rights civilization has roughly experienced four awakening eras:initialization,revolution,popularization,and globalization.In terms of its value dimensions,it has the characteristics of progressiveness,diversity,commonality,inclusiveness,indivisibility,openness,and so on.The historical position of human rights civilization and the development of its value dimensions have shown to the world that human rights are the common wealth of humanity,and human rights belong to all mankind;human rights are historical,concrete,and developmental;the concept of human rights is constantly evolving,and its connotations and categories are constantly expanding;achieving the free and well-rounded development of every person is the highest value realm of human rights civilization.The Chinese modernization endows Chinese civilization with modern strength and opens up new horizons for human rights civilization.The new pattern of human rights civilization to be created by Chinese modernization not only possesses the common characteristics of human rights civilization but also enjoys Chinese characteristics based on its own national conditions,enriching and developing the diversity of human rights civilization for all mankind.

Small heat shock protein B8:from cell functions to its involvement in diseases and potential therapeutic applications

Heat shock protein family B(small)member 8(HSPB8)is a 22 kDa ubiquitously expressed protein belonging to the family of small heat shock proteins.HSPB8 is involved in various cellular mechanisms mainly related to proteotoxic stress response and in other processes such as inflammation,cell division,and migration.HSPB8 binds misfolded clients to prevent their aggregation by assisting protein refolding or degradation through chaperone-assisted selective autophagy.In line with this function,the pro-degradative activity of HSPB8 has been found protective in several neurodegenerative and neuromuscular diseases characterized by protein misfolding and aggregation.In cancer,HSPB8 has a dual role being capable of exerting either a pro-or an anti-tumoral activity depending on the pathways and factors expressed by the model of cancer under investigation.Moreover,HSPB8 exerts a protective function in different diseases by modulating the inflammatory response,which characterizes not only neurodegenerative diseases,but also other chronic or acute conditions affecting the nervous system,such as multiple sclerosis and intracerebellar hemorrhage.Of note,HSPB8 modulation may represent a therapeutic approach in other neurological conditions that develop as a secondary consequence of other diseases.This is the case of cognitive impairment related to diabetes mellitus,in which HSPB8 exerts a protective activity by assuring mitochondrial homeostasis.This review aims to summarize the diverse and multiple functions of HSPB8 in different pathological conditions,focusing on the beneficial effects of its modulation.Drug-based and alternative therapeutic approaches targeting HSPB8 and its regulated pathways will be discussed,emphasizing how new strategies for cell and tissue-specific delivery represent an avenue to advance in disease treatments.

Cosmological Model in Four Time and Four Space Dimensions

We develop a cosmological model in a physical background scenario of four time and four space dimensions ((4+4)-dimensions or (4+4)-universe). We show that in this framework the (1+3)-universe is deeply connected with the (3+1)-universe. We argue that this means that in the (4+4)-universe there exists a duality relation between the (1+3)-universe and the (3+1)-universe.

1,8-桉叶油素干预大鼠实验性牙周炎模型的炎症反应

背景:研究表明,天然植物精油提取物1,8-桉叶油素具有抗炎、抗氧化、抗菌、抗肿瘤等多种药理作用,在多种疾病中表现出抗炎作用。目的:探讨1,8-桉叶油素对大鼠实验性牙周炎模型炎症反应的影响。方法:按照完全随机数字表法将30只SD大鼠随机分为正常对照组、牙周炎对照组和1,8-桉叶油素组,每组10只。牙周炎对照组和1,8-桉叶油素组利用正畸钢丝结扎法构建实验性牙周炎模型。造模8周后,正常对照组和牙周炎对照组大鼠颊、腭侧牙周袋内均注射生理盐水,1,8-桉叶油素组大鼠颊、腭侧牙周袋内注射1,8-桉叶油素溶液,2次/d,连续给药4周。给药结束后,进行牙周临床指标检测、牙周组织学评估、血清炎症因子水平检测及牙龈组织中炎症因子m RNA与蛋白表达检测。结果与结论:①与正常对照组比较,牙周炎对照组大鼠牙龈出血指数、牙周探诊深度增加(P<0.05),血清中白细胞介素1β、肿瘤坏死因子α、白细胞介素6水平升高(P<0.05),血清中白细胞介素10水平降低(P<0.05),牙龈组织中白细胞介素1β、肿瘤坏死因子α、白细胞介素6mRNA与蛋白表达均升高(P<0.05),牙龈组织中白细胞介素10 mRNA与蛋白表达均降低(P<0.05);苏木精-伊红染色结果显示,牙周炎对照组大鼠牙周组织炎症明显。②与牙周炎对照组比较,1,8-桉叶油素组大鼠牙龈出血指数、牙周探诊深度减少(P<0.05),血清中白细胞介素1β、肿瘤坏死因子α、白细胞介素6水平降低(P<0.05),血清中白细胞介素10水平升高(P<0.05),牙龈组织中白细胞介素1β、肿瘤坏死因子α、白细胞介素6 mRNA与蛋白表达均降低(P<0.05),牙龈组织中白细胞介素10 mRNA与蛋白表达均升高(P<0.05);苏木精-伊红染色结果显示,1,8-桉叶油素组大鼠牙周组织炎症明显减轻。结果表明,1,8-桉叶油素治疗可减轻大鼠实验性牙周炎模型的炎症反应。

CHARACTERISTICS OF FAN STALLING BASED ON CORRELATED DIMENSIONS

Different from the previous qualitative analysis of linear systems in time and frequency domains, the method for describing nonlinear systems quantitatively is proposed based on correlated dimensions. Nonlinear dynamics theory is used to analyze the pressure data of a contrarotating axial flow fan. The delay time is 18 and the embedded dimension varies from 1 to 25 through phase-space reconstruction. In addition, the correlated dimensions are calculated before and after stalling. The results show that the correlated dimensions drop from 1. 428 before stalling to 1. 198 after stalling, so they are sensitive to the stalling signal of the fan and can be used as a characteristic quantity for the judging of the fan stalling.

Study on the Spatial Pattern Changes of Land Use Based on Fractal Dimensions in Tianjin New Coastal Area

[Objective] The aim was to discuss the spatial pattern changes of land use in Tianjin new coastal area based on fractal dimensions.[Method] By dint of remote and geographic information system technology to obtain the data of urban land use in new coastal area from 1993 to 2008,the boundary dimension,radius dimension and information dimension of each land use type were calculated based on fractal dimension.In addition,the revealed land use spatial dimension changes characteristics were analyzed.[Result] The spatial distribution of each land use type in new costal area had distinct fractal characteristics.And,the amount and changes of three types of dimension values effectively revealed the changes of complicatedness,centeredness and evenness of spatial pattern of land use in the study area.The boundary dimension of unused land and salty earth increased incessantly,which suggested its increasing complicatedness.The boundary of the port and wharf and shoal land was getting simpler.The radius dimension of the cultivated land was larger than 2,which suggested that its area spread from center to the surroundings;the one in salty land and waters distributed evenly within different radius space to the center of the city;the one in other land use types reduced gradually from center to the surroundings.The information dimension value in the woodland and orchard land,unused land and shoal land was small,and was in obvious concentrated distribution;the spatial distribution of cultivated and salty land concentrated in the outside area;the construction area in the port and wharf spread gradually on the basis of original state;the spatial distribution of waters and residents and mines were even.[Conclusion] Applying fractal dimensions to the study of spatial pattern changes of urban land use can make up for some disadvantages in classical urban spatial pattern quantitative research,which has favorable practical value.

基于Dimensions平台的卓越行动计划期刊国际影响力评价

利用Dimensions平台,对中国科技期刊卓越行动计划项目资助的22种A类期刊的国际影响力进行评价分析发现,22种期刊总被引频次均呈现上升趋势,且学科相对引用率指标FCR均超过1;80%以上的A类卓越期刊载文量实现稳步上升,有6种期刊载文量上升的同时FCR也得到提升,但部分期刊由于载文量增幅较大,期刊内容质量没有跟上,导致FCR下降;社交媒体评价指标AAS较高的文章集中在新冠病毒研究,仍有部分卓越期刊的社交媒体传播能力较弱;FCR呈上升趋势的期刊约组了相对优质的国际论文。据此提出培育世界一流科技期刊的相关建议:兼顾期刊载文量与学术质量的平衡;充分利用国外社交媒体资源,及时传播最新科研成果;针对重大突发事件,建立完善应急措施;约组高质量的国内外论文,打造世界一流科技期刊。

聚乙烯醇/ZIF-8复合膜的制备及吸附性能

通过溶液流延法制备了聚乙烯醇/ZIF-8复合膜,采用SEM、FT-IR、XRD、TGA、BET等对聚乙烯醇/ZIF-8复合膜进行表征,并探究了复合膜的水稳定性、机械性能,以及对刚果红(CR)的吸附性能。结果表明:聚乙烯醇与ZIF-8材料复合后能改善聚乙烯醇的热稳定性,增加膜表面粗糙度;吸附过程以化学吸附为主,通过内部扩散控制吸附速率,符合准二级吸附动力学模型和Langmuir吸附曲线;ZIF-8质量分数为10%时制备的聚乙烯醇/ZIF-8复合膜,在温度20℃、刚果红溶液质量浓度95 mg/L时,对刚果红的最大吸附量达159.63 mg/g,使用4次后仍能保持93%的吸附效率。

基于改进YOLOv8的嵌入式道路裂缝检测算法

在边缘端设备部署YOLOv8L模型进行道路裂缝检测可以实现较高的精度,但难以保证实时检测。针对此问题,提出一种可部署到边缘计算设备Jetson AGX Xavier上的基于改进YOLOv8模型的目标检测算法。首先,利用部分卷积设计Faster Block结构以替换YOLOv8 C2f模块中的Bottleneck结构,并将改进后的C2f模块记为C2f-Faster;其次,在YOLOv8主干网络中的每个C2f-Faster模块之后接一个SE(Squeeze-and-Excitation)通道注意力层,进一步提高检测的精度。在开源道路损害数据集RDD20(Road Damage Detection 20)上的实验结果表明:所提方法的平均F1得分为0.573,每秒检测帧数(FPS)为47,模型大小为55.5MB,相较于GRDDC2020(GlobalRoadDamageDetection Challenge 2020)的SOTA(State-Of-The-Art)模型,F1得分提高了0.8个百分点,FPS提高了291.7%,模型大小减小了41.8%,实现了在边缘设备上对道路裂缝实时且准确的检测。

白细胞介素-8与类风湿关节炎关联性研究进展

类风湿关节炎(rheumatoid arthritis,RA)是一种多关节慢性炎症性自身免疫性疾病,其发病机制主要包括炎症反应、软骨破坏及骨侵蚀和血管生成,并与炎症因子密切相关。其中白细胞介素-8(IL-8)为炎症因子中重要一员,故本文从炎症、软骨破坏及骨侵蚀和血管生成三方面对IL-8在RA发生发展中的作用机制展开综述。本文通过阐述IL-8与RA的相关性,明确IL-8在RA发病机制中的作用,以期为今后深入研究RA提供新的参考依据。

Mathematically modeling the main dimensions of self-elevating drilling units

The present status of self-elevating drilling units was analysed. Based on statistics of the main dimensions of self-elevating drilling units, a mathematical model was established using stepwise return procedures and a back-propagation neural network. mathematical model is applicable and reliable. The of the main dimensions of self-elevating drilling Analysis of examples of calculations showed that the model is useful for mastering the essential variations units and can be used for technical and economic analysis as well as in conceptual designs of drilling units.

miR-567通过调控CDK8在NSCLC增殖、迁移和细胞周期中的作用及其临床相关性研究

目的探讨微小RNA(miR)-567通过调控周期蛋白依赖性激酶8(CDK8)在非小细胞肺癌(NSCLC)增殖、迁移和细胞周期中的作用及其临床相关性研究。方法收集40例NSCLC患者的肿瘤组织和临近癌旁组织,采用实时荧光定量PCR(qRT-PCR)检测miR-567和CDK8的表达。将miR-NC mimic、miR-567 mimic、oe-NC和oe-CDK8转染至A549和H1975细胞中,使用qRT-PCR检测miR-567和CDK8的表达,CCK-8法检测细胞增殖水平,Transwell法检测细胞迁移水平,流式细胞术检测细胞周期变化。通过荧光素酶报告基因实验检测miR-567与CDK8的靶向性。结果在NSCLC患者的肿瘤组织中,miR-567表达降低,而CDK8表达升高,二者呈负相关(P<0.05)。在A549和H1975细胞中,miR-567 mimic组相较于miR-NC mimic组,miR-567表达升高,CDK8表达降低,细胞增殖和迁移水平降低,细胞G1期比例升高,S期比例降低;miR-567 mimic组在正常型CDK8中,荧光强度低于miR-NC mimic组;miR-567 mimic+oe-CDK8组相较于miR-567 mimic+oe-NC组,CDK8表达升高,细胞增殖和迁移水平升高,细胞G1期比例降低,S期比例升高。结论miR-567通过靶向抑制CDK8表达,控制肿瘤细胞在S期阻滞,从而抑制NSCLC的增殖和迁移能力。

鄂尔多斯盆地二叠系盒8段河流扇沉积模式及勘探意义

根据野外露头及岩心的分析化验资料,在源-汇系统分析的基础上,对鄂尔多斯盆地二叠系盒8段的古气候环境及沉积相特征进行了详细研究。研究结果表明:(1)鄂尔多斯盆地二叠系盒8段Sr/Cu的值多大于10,V/Cr值多小于2.0,地层厚度差小于30 m,未出现明显的突变,古沉积坡度为0.5°~1.0°,古地貌开阔平缓且无明显坡折带,沉积水体较浅,是在古气候干旱、古地形平缓的背景下,受阶段性洪水作用主导的事件沉积。(2)盒8段沉积期,盆地不存在大面积汇水区,沉积体系中河流并未进入湖泊水体,而是向东南流出盆地或是消失在内陆干旱地区,全盆地以洪泛平原沉积为主,表现为河道与泛滥平原交互分布的沉积格局,形成了河流扇沉积模式。(3)湖水进退往复,洪水期与枯水期间歇发育,洪水期多期次决口河道接力搬运使得粗粒级砂岩向湖盆长距离延伸,枯水期发育厚层泥质沉积可作为区域性盖层,形成了良好的储盖组合,勘探潜力大。

血清MFG-E8与肾结石经皮肾镜治疗预后的相关性

目的 探讨血清乳脂肪球表皮生长因子8(MFG-E8)与肾结石经皮肾镜治疗预后的相关性。方法 选取2020年3月—2021年3月我院行经皮肾镜取石术进行治疗的96例肾结石患者为研究对象,根据术后3个月患者是否发生肾损伤将患者分为预后不良组(32例)和预后良好组(64例)。采用酶联免疫吸附实验检测MFG-E8水平,分析其水平变化与肾结石经皮肾镜治疗预后的相关性,并根据血清MFG-E8水平绘制ROC曲线,评估其对肾结石经皮肾镜治疗预后的价值。结果 单因素分析结果显示,结石大小、结石形状与肾结石经皮肾镜治疗预后无关(P>0.05),预后不良组患者Scr、BUN、胱抑素C(CysC)、TNF-α、急性生理与与慢性健康状况评分系统Ⅱ(APACHEⅡ)水平显著高于预后良好组,而eGFR、血清MFG-E8水平显著低于预后良好组(均P<0.05)。Pearson相关性分析结果显示,血清MFG-E8水平与Scr、BUN、CysC、血清人单核细胞趋化蛋白-1(MCP-1)、IL-6、TNF-α、APACHEⅡ呈负相关关系,与eGFR呈正相关关系(均P<0.05)。血清MFG-E8水平截断值为217.56 pg/ml时,评估肾结石患者经皮肾镜治疗预后不良的ROC曲线下面积为0.69(95%CI:1.138~2.259),敏感度和特异度分别为77.46%和68.35%;血清MCP-1评估肾结石患者经皮肾镜治疗预后不良的ROC曲线下面积为0.68(95%CI:1.112~2.147),敏感度和特异度分别为76.36%和69.25%;血清Scr评估肾结石患者经皮肾镜治疗预后不良的ROC曲线下面积为0.72(95%CI:1.169~2.248),敏感度和特异度分别为78.29%和67.43%;三者联合检测评估肾结石患者经皮肾镜治疗预后不良的ROC曲线下面积为0.76(95%CI:1.248~2.356),敏感度和特异度分别为81.37%和69.45%。结论 肾结石经皮肾镜治疗预后不良患者血清MFG-E8水平异常降低,其水平与肾结石患者肾损伤程度密切相关,血清MFG-E8可作为肾结石经皮肾镜治疗预后评估的重要依据。

基于改进YOLOv8的无人机航拍图像目标检测算法

针对现存无人机航拍图像目标检测算法检测精度较低、模型较为复杂的问题,提出一种改进YOLOv8的目标检测算法。在骨干网络引入多尺度注意力EMA,捕捉细节信息,以提高模型的特征提取能力;改进C2f模块,减小模型的计算量。提出了轻量级的Bi-YOLOv8特征金字塔网络结构改进YOLOv8的颈部,增强了模型多尺度特征融合能力,改善网络对小目标的检测精度。使用WIoU Loss优化原网络损失函数,引入一种动态非单调聚焦机制,提高模型的泛化能力。在无人机航拍数据集VisDrone2019上的实验表明,提出算法的mAP50为40.7%,较YOLOv8s提升了1.5%,参数量降低了42%,同时相比于其他先进的目标检测算法在精度和速度上均有提升,证明了改进算法的有效性和先进性。

基于改进COF-YOLO v8n的油茶果静态与动态检测计数方法

针对自然环境下油茶果存在严重遮挡、近景色、小目标等现象,使用YOLO网络存在检测精度低、漏检现象严重等问题,提出对YOLO v8n网络进行改进。首先使用MPDIOU作为YOLO v8n的损失函数,有效解决因为果实重叠导致的漏检问题;其次调整网络,向其中加入小目标检测层,使网络能够关注小目标油茶以及被树叶遮挡的油茶;最后使用SCConv作为特征提取网络,既能兼顾检测精度又能兼顾检测速度。改进COF-YOLO v8n网络精确率、召回率、平均精度均值分别达到97.7%、97%、99%,比未改进的YOLO v8n分别提高3.2、4.8、2.4个百分点,其中严重遮挡情况下油茶检测精确率、召回率、平均精度均值分别达到95.9%、95%、98.5%,分别比YOLO v8n提高4.0、9.1、4.6个百分点。因此改进后COF-YOLO v8n网络能够明显提高油茶在严重遮挡、近景色、小目标均存在情况下的识别精度,减小油茶的漏检。此外,模型能够实现动、静态输入条件下油茶果计数。动态计数借鉴DeepSORT算法的多目标跟踪思想,将改进后COF-YOLO v8n的识别输出作为DeepSORT的输入,实现油茶果实的追踪计数。所得改进模型具有很好的鲁棒性,且模型简单可以嵌入到边缘设备中,不仅可用于指导自动化采收,还可用于果园产量估计,为果园物流分配提供可靠借鉴。