A veterinary(兽医的)clinic in Türkiye recently shared the touching story of a stray dog who carried her unconscious puppy in her mouth and left it at the clinic door,as if begging for help.If not for the viral vi...A veterinary(兽医的)clinic in Türkiye recently shared the touching story of a stray dog who carried her unconscious puppy in her mouth and left it at the clinic door,as if begging for help.If not for the viral video footage captured by CCTV cameras,most people would probably think this story too heart⁃warming to be true.A veterinary clinic in the Adnan Kahveci neighborhood of Beylikdüzü,in Türkiye's Istanbul Province,recently reported one of its most incredible cases.On January 13,an animal lover brought a young puppy he had found on the street,claiming it was the only survivor of a stray's litter.The clinic rushed to treat the puppy only to then find that its mother showed up on the doorstep with another unconscious puppy in her mouth.A technician noticed the desperate animal and rushed to tend to her offspring,which suffered from hypothermia(体温过低)and had a very low heart rate.展开更多
基于高斯差分小波(Difference of Gaussians,DOG)向球面上拓展产生的球面DOG小波函数,提出了基于球面DOG小波框架重构骨料形状的新方法。为探讨该方法的优势,采用该方法和传统球谐重构法,对采用三维扫描仪获取机制砂的表面点云数据进行...基于高斯差分小波(Difference of Gaussians,DOG)向球面上拓展产生的球面DOG小波函数,提出了基于球面DOG小波框架重构骨料形状的新方法。为探讨该方法的优势,采用该方法和传统球谐重构法,对采用三维扫描仪获取机制砂的表面点云数据进行重构,分析了球面DOG小波框架方法的参数设置,以及准确性。结果显示,随着球面DOG小波框架qmax的增大,重构骨料的形貌逐渐接近真实形态。且当qmax达到4时,支撑集足够小的球面DOG小波可有效避免高阶次球谐级数重构多棱角骨料时由于振铃效应导致的重构精度下降问题。展开更多
I love dogs because they are so friendly and lovely.With bright eyes,dogs can see things in the dark.Their noses are very sensitive,and this helps them find things easily.My pet dog is named Dahu.He is white with long...I love dogs because they are so friendly and lovely.With bright eyes,dogs can see things in the dark.Their noses are very sensitive,and this helps them find things easily.My pet dog is named Dahu.He is white with long ears.Every day when I come back home from school,he runs to me happily and wags his tail.We often play games together.He likes to chase a ball,and I throw the ball far,then he runs quickly to bring it back.展开更多
Activity 1 Think about the following questions and write down your answers before reading the text.1.What factors might contribute to the high price of a rare dog?2.How do you think the ownership of such an expensive ...Activity 1 Think about the following questions and write down your answers before reading the text.1.What factors might contribute to the high price of a rare dog?2.How do you think the ownership of such an expensive dog might impact the owner's lifestyle or responsibilities?展开更多
Fine-grained dog breed classification presents significant challenges due to subtle inter-class differences,pose variations,and intra-class diversity.To address these complexities and limitations of traditional handcr...Fine-grained dog breed classification presents significant challenges due to subtle inter-class differences,pose variations,and intra-class diversity.To address these complexities and limitations of traditional handcrafted approaches,a novel and efficient two-stageDeep Learning(DL)framework tailored for robust fine-grained classification is proposed.In the first stage,a lightweight object detector,YOLO v8N(You Only Look Once Version 8 Nano),is finetuned to localize both the head and full body of the dog from each image.In the second stage,a dual-stream Vision Transformer(ViT)architecture independently processes the detected head and body regions,enabling the extraction of region-specific,complementary features.This dual-path approach improves feature discriminability by capturing localized cues that are vital for distinguishing visually similar breeds.The proposed framework introduces several key innovations:(1)a modular and lightweight head–body detection pipeline that balances accuracy with computational efficiency,(2)a region-awareViT model that leverages spatial attention for enhanced fine-grained recognition,and(3)a training scheme incorporating advanced augmentations and structured supervision to maximize generalization.These contributions collectively enhancemodel performancewhilemaintaining deployment efficiency.Extensive experiments conducted on the Tsinghua Dogs dataset validate the effectiveness of the approach.The model achieves an accuracy of 90.04%,outperforming existing State-of-the-Art(SOTA)methods across all key evaluation metrics.Furthermore,statistical significance testing confirms the robustness of the observed improvements over multiple baselines.The proposed method presents an effective solution for breed recognition tasks and shows strong potential for broader applications,including pet surveillance,veterinary diagnostics,and cross-species classification.Notably,it achieved an accuracy of 96.85% on the Oxford-IIIT Pet dataset,demonstrating its robustness across different species and breeds.展开更多
Aiming at the pain points of visually impaired people during travel,this research innovatively transforms an industrial quadruped robot into a guide dog device.By transplanting the PCS-9180 motion control system(1.7 m...Aiming at the pain points of visually impaired people during travel,this research innovatively transforms an industrial quadruped robot into a guide dog device.By transplanting the PCS-9180 motion control system(1.7 m/s,IP66),and integrating a multi-modal perception network with a lightweight YOLO11 model.Tests show that the pass-through rate in complex terrains is 98%,the response delay is 0.3 seconds,and the cost is 50%that of a guide dog.The research verifies the social value of the transformation of industrial robot technology.展开更多
In a rural area near Munich, 52 persons aged 65 years and older were interviewed in person about health and social life circumstances. Findings: Dog owners take significantly longer walks than people who do not own do...In a rural area near Munich, 52 persons aged 65 years and older were interviewed in person about health and social life circumstances. Findings: Dog owners take significantly longer walks than people who do not own dogs, averaging more than 120 minutes daily (p < 0.0001). On average, people who do not own a dog walked 38 minutes, cat owners 17 minutes. 94% of the dog owners were active daily compared to 14% of those who do not own a dog. Dog owners go to the doctor on average 5.3 times per year, people who do not own a dog 7.8 times. There was no difference between the two groups in regard to the use of medication. 80% would not move to a residential home for the elderly because of the dog, and 87% would want to take the dog along. 50% of the dog owners and 41% of those who do not own a dog had on average more than 3 contacts with other people, 6% of the dog owners and 23% of those who do not own a dog had less than one contact per day. 19% of the dog owners and 36% of those who do not own a dog would describe themselves as reserved in dealings with people. 71% stated that the dog had been very useful to help them overcome the loss of a person close to them. The W-5 [Wellbeing Five score] for dog owners was an average value of 75%, for those who did not own a dog 71%. Depression was uniformly distributed in both groups. The BMIs in both groups were similar. There was no correlation to the length of the daily walk.展开更多
在英语影视剧或文学作品中,你或许见过这样的场景:主角望着窗外倾盆大雨惊呼“It’s raining cats and dogs!”。其中,raining cats and dogs字面意思是“天上掉猫狗”,实际却用来形容暴雨如瀑布般猛烈。这种超现实的表达并非空穴来风,...在英语影视剧或文学作品中,你或许见过这样的场景:主角望着窗外倾盆大雨惊呼“It’s raining cats and dogs!”。其中,raining cats and dogs字面意思是“天上掉猫狗”,实际却用来形容暴雨如瀑布般猛烈。这种超现实的表达并非空穴来风,它的诞生糅合了神话想象与历史现实,成为英语文化中一道独特的语言风景。展开更多
针对医学图像配准对鲁棒性强、准确性高和速度快的要求,提出一种基于最小生成树的DoG(d ifference of Gaussian)关键点配准算法。该算法首先从图像上提取DoG关键点,然后将关键点对应的灰度信息融入联合Rényi熵中,最后使用最小生成...针对医学图像配准对鲁棒性强、准确性高和速度快的要求,提出一种基于最小生成树的DoG(d ifference of Gaussian)关键点配准算法。该算法首先从图像上提取DoG关键点,然后将关键点对应的灰度信息融入联合Rényi熵中,最后使用最小生成树来估计联合Rényi熵。新算法结合了DoG关键点的鲁棒性和最小生成树估计Rényi熵的高效性。实验结果表明,在图像含有噪声、灰度不均匀和初始变换范围较大的情况下,该算法在达到良好配准精度的同时,具有较强的鲁棒性和较快的速度。展开更多
文摘A veterinary(兽医的)clinic in Türkiye recently shared the touching story of a stray dog who carried her unconscious puppy in her mouth and left it at the clinic door,as if begging for help.If not for the viral video footage captured by CCTV cameras,most people would probably think this story too heart⁃warming to be true.A veterinary clinic in the Adnan Kahveci neighborhood of Beylikdüzü,in Türkiye's Istanbul Province,recently reported one of its most incredible cases.On January 13,an animal lover brought a young puppy he had found on the street,claiming it was the only survivor of a stray's litter.The clinic rushed to treat the puppy only to then find that its mother showed up on the doorstep with another unconscious puppy in her mouth.A technician noticed the desperate animal and rushed to tend to her offspring,which suffered from hypothermia(体温过低)and had a very low heart rate.
文摘基于高斯差分小波(Difference of Gaussians,DOG)向球面上拓展产生的球面DOG小波函数,提出了基于球面DOG小波框架重构骨料形状的新方法。为探讨该方法的优势,采用该方法和传统球谐重构法,对采用三维扫描仪获取机制砂的表面点云数据进行重构,分析了球面DOG小波框架方法的参数设置,以及准确性。结果显示,随着球面DOG小波框架qmax的增大,重构骨料的形貌逐渐接近真实形态。且当qmax达到4时,支撑集足够小的球面DOG小波可有效避免高阶次球谐级数重构多棱角骨料时由于振铃效应导致的重构精度下降问题。
文摘目的研究三七Panax notoginseng DOG(PnDOG)基因家族结构特征和表达模式及其在三七种子后熟休眠和萌发的作用机制。方法基于三七的全基因组和转录组数据,利用生物信息手段分析PnDOG家族的理化性质、基因结构、系统发育关系、保守结构域、顺式作用元件和表达模式;探讨了外施赤霉素(gibberellins,GA)和脱落酸(abscisic acid,ABA)激素对三七种子的影响,以及PnDOG基因家族对这些外源激素的响应机制。结果PnDOG基因家族包含16个成员,不均匀地分布在8条染色体上。PnDOG基因都含有外显子,编码216~514个氨基酸,均为亲水性蛋白,亚细胞定位预测显示均位于细胞核中。系统进化将PnDOG基因分为3个亚组,不同亚组成员的基因结构存在差异。共线性分析显示,串联重复是PnDOG基因扩增的主要驱动因素。启动子顺式作用元件分析显示,PnDOG基因的启动子区含有大量激素响应、胁迫响应以及少量胚发育响应等元件。基因本体(geneontology,GO)和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)分析显示,PnDOG基因可能在非生物应激和激素诱导中起作用。基因表达分析和qRT-PCR分析显示,PnDOG基因在三七不同组织中均有表达,并具有明显的组织特异性。部分PnDOG基因在三七种子不同后熟阶段和激素处理下的表达量均存在显著差异。发现PnDOG1和PnDOG14在种子中高表达且受激素强烈诱导,其表达量随后熟时间的增加逐渐下降,推测PnDOG1和PnDOG14是调控三七种子后熟休眠的关键基因。结论大多数PnDOG基因的高表达可能与三七种子的后熟休眠形成有关,在后熟过程中通过响应激素信号调控种子休眠解除。
文摘I love dogs because they are so friendly and lovely.With bright eyes,dogs can see things in the dark.Their noses are very sensitive,and this helps them find things easily.My pet dog is named Dahu.He is white with long ears.Every day when I come back home from school,he runs to me happily and wags his tail.We often play games together.He likes to chase a ball,and I throw the ball far,then he runs quickly to bring it back.
文摘Activity 1 Think about the following questions and write down your answers before reading the text.1.What factors might contribute to the high price of a rare dog?2.How do you think the ownership of such an expensive dog might impact the owner's lifestyle or responsibilities?
基金supported by the faculty research fund of Sejong University in 2023,the National Research Foundation ofKorea(NRF)grant funded by theKorea government(MSIT)(RS-2025-00518960)Institute of Information&Communications Technology Planning&Evaluation(IITP)under the metaverse support program to nurture the best talents(IITP-2025-RS-2023-00254529)grant funded by the Korea government(MSIT).
文摘Fine-grained dog breed classification presents significant challenges due to subtle inter-class differences,pose variations,and intra-class diversity.To address these complexities and limitations of traditional handcrafted approaches,a novel and efficient two-stageDeep Learning(DL)framework tailored for robust fine-grained classification is proposed.In the first stage,a lightweight object detector,YOLO v8N(You Only Look Once Version 8 Nano),is finetuned to localize both the head and full body of the dog from each image.In the second stage,a dual-stream Vision Transformer(ViT)architecture independently processes the detected head and body regions,enabling the extraction of region-specific,complementary features.This dual-path approach improves feature discriminability by capturing localized cues that are vital for distinguishing visually similar breeds.The proposed framework introduces several key innovations:(1)a modular and lightweight head–body detection pipeline that balances accuracy with computational efficiency,(2)a region-awareViT model that leverages spatial attention for enhanced fine-grained recognition,and(3)a training scheme incorporating advanced augmentations and structured supervision to maximize generalization.These contributions collectively enhancemodel performancewhilemaintaining deployment efficiency.Extensive experiments conducted on the Tsinghua Dogs dataset validate the effectiveness of the approach.The model achieves an accuracy of 90.04%,outperforming existing State-of-the-Art(SOTA)methods across all key evaluation metrics.Furthermore,statistical significance testing confirms the robustness of the observed improvements over multiple baselines.The proposed method presents an effective solution for breed recognition tasks and shows strong potential for broader applications,including pet surveillance,veterinary diagnostics,and cross-species classification.Notably,it achieved an accuracy of 96.85% on the Oxford-IIIT Pet dataset,demonstrating its robustness across different species and breeds.
文摘Aiming at the pain points of visually impaired people during travel,this research innovatively transforms an industrial quadruped robot into a guide dog device.By transplanting the PCS-9180 motion control system(1.7 m/s,IP66),and integrating a multi-modal perception network with a lightweight YOLO11 model.Tests show that the pass-through rate in complex terrains is 98%,the response delay is 0.3 seconds,and the cost is 50%that of a guide dog.The research verifies the social value of the transformation of industrial robot technology.
文摘In a rural area near Munich, 52 persons aged 65 years and older were interviewed in person about health and social life circumstances. Findings: Dog owners take significantly longer walks than people who do not own dogs, averaging more than 120 minutes daily (p < 0.0001). On average, people who do not own a dog walked 38 minutes, cat owners 17 minutes. 94% of the dog owners were active daily compared to 14% of those who do not own a dog. Dog owners go to the doctor on average 5.3 times per year, people who do not own a dog 7.8 times. There was no difference between the two groups in regard to the use of medication. 80% would not move to a residential home for the elderly because of the dog, and 87% would want to take the dog along. 50% of the dog owners and 41% of those who do not own a dog had on average more than 3 contacts with other people, 6% of the dog owners and 23% of those who do not own a dog had less than one contact per day. 19% of the dog owners and 36% of those who do not own a dog would describe themselves as reserved in dealings with people. 71% stated that the dog had been very useful to help them overcome the loss of a person close to them. The W-5 [Wellbeing Five score] for dog owners was an average value of 75%, for those who did not own a dog 71%. Depression was uniformly distributed in both groups. The BMIs in both groups were similar. There was no correlation to the length of the daily walk.
文摘在英语影视剧或文学作品中,你或许见过这样的场景:主角望着窗外倾盆大雨惊呼“It’s raining cats and dogs!”。其中,raining cats and dogs字面意思是“天上掉猫狗”,实际却用来形容暴雨如瀑布般猛烈。这种超现实的表达并非空穴来风,它的诞生糅合了神话想象与历史现实,成为英语文化中一道独特的语言风景。
文摘针对医学图像配准对鲁棒性强、准确性高和速度快的要求,提出一种基于最小生成树的DoG(d ifference of Gaussian)关键点配准算法。该算法首先从图像上提取DoG关键点,然后将关键点对应的灰度信息融入联合Rényi熵中,最后使用最小生成树来估计联合Rényi熵。新算法结合了DoG关键点的鲁棒性和最小生成树估计Rényi熵的高效性。实验结果表明,在图像含有噪声、灰度不均匀和初始变换范围较大的情况下,该算法在达到良好配准精度的同时,具有较强的鲁棒性和较快的速度。
