针对从视频中恢复三维人体模型运动序列时,由于图像特征提取能力有限而导致三维人体模型运动序列重建效果不佳的问题,提出了一种基于Involution卷积的三维人体重建方法。首先为了引入自注意力机制,在ResNet50网络结构中加入Involution算...针对从视频中恢复三维人体模型运动序列时,由于图像特征提取能力有限而导致三维人体模型运动序列重建效果不佳的问题,提出了一种基于Involution卷积的三维人体重建方法。首先为了引入自注意力机制,在ResNet50网络结构中加入Involution算子,获取视频图像帧的特征向量,然后使用姿态估计网络和形状估计网络获取人体姿势以及形状参数,最后使用蒙皮多人线性模型(skinned multi-person linear model, SMPL)生成三维人体模型的运动序列。在三维姿态户外数据集(3D pose in the wild, 3DPW)上与视频人体姿态形状估计推理(video inference for body pose and shape estimation, VIBE)方法以及时间一致性网格恢复(temporally consistent mesh recovery, TCMR)方法进行对比实验,平均精度相比于VIBE、TCMR分别提升了3.1%、0.7%,能够为运动捕捉、三维人体动画制作等工作提供更为准确的三维人体模型。展开更多
针对通用目标检测算法在检测小目标时存在错检和漏检等问题,提出了一种小目标检测算法IPH(Involution Prediction Head),将其运用在YOLOv4和YOLOv5的检测头部分,在VOC2007数据集上的实验结果表明,运用IPH后的YOLOv4小目标检测精度APs(AP...针对通用目标检测算法在检测小目标时存在错检和漏检等问题,提出了一种小目标检测算法IPH(Involution Prediction Head),将其运用在YOLOv4和YOLOv5的检测头部分,在VOC2007数据集上的实验结果表明,运用IPH后的YOLOv4小目标检测精度APs(AP for small objects)相比原始算法提升了1.1%,在YOLOv5上的APs更是提升了5.9%。经智能交通检测数据集进一步检验,IPH算法和去下采样能有效提升小目标检测精度,减少错检和漏检的情况。展开更多
With a special matter, Chinese literature has differences with traditional theories from western countries in essence, so that Chinese literature demonstrates its renovation and involution. The main reason is its tren...With a special matter, Chinese literature has differences with traditional theories from western countries in essence, so that Chinese literature demonstrates its renovation and involution. The main reason is its trends of modernity. The transformation from oversea exchange is very important. This paper mainly explains the specific content of paradox of Chinese literature in mo dernity, and explores the reasons for differences between China and western countries.展开更多
Objective: Apios americana,a plant used as a staple ingredient of native American diets,has various properties,including anti-cancer,anti-hyperglycemic,hypotensive,and anti-inflammatory activity.In Japan,Apios is used...Objective: Apios americana,a plant used as a staple ingredient of native American diets,has various properties,including anti-cancer,anti-hyperglycemic,hypotensive,and anti-inflammatory activity.In Japan,Apios is used as a post-natal medication.After parturition,women undergo a period of recovery as they return to pre-pregnancy conditions.However,few health products that aid post-partum recovery are on the market.We explored whether Apios can accelerate the post-partum recovery process,in particular the involution of the uterus.Methods: Female rats kept in individual cages were mated with two male rats,with the exception of the control group(female rats without mating,on basal diet;n=6).After delivery,rats were divided into five groups based on their diet: basal diet(model;n=6);basal diet+oral intake at 5.4 g/kg of Chanfukang granules(a Chinese patent medicine preparation for post-partum lochia)(positive;n=6);basal diet containing 10% Apios powder(low;n=6);basal diet containing 20% Apios powder(medium;n=6);basal diet containing 40% Apios powder(high;n=6).Five days later,uteri and spleens were weighed.Uterus and spleen indices for each rat were calculated by dividing visceral weight by the total weight.Hormone and cytokine concentrations were measured using enzyme-linked immunosorbent assay(ELISA).Histological analysis of uteri was completed using hematoxylin and eosin(H&E) staining.Expression of matrix metalloproteinases and inhibitors in uteri was measured by western blotting.Results: Our results showed that Apios treatment reduced the post-partum uterus index and regulated the hormone concentrations.Moreover,we found that the process of uterine involution was accelerated,based on morphological changes in the uterus.In addition,our results indicated that Apios alleviated the inflammatory response induced by the involution process.Transforming growth factor β was also found to be regulated by Apios.There were significant downregulation of matrix metalloproteinases and upregulation of their inhibitors by Apios,which suggested that Apios increased the rate of the collagen clearance process.Conclusions: These results,based on experimental observations at the molecular and protein levels,verified our hypothesis that Apios can improve uterine involution,and demonstrated the potential application of Apios in post-partum care.展开更多
Let （M, T） be a smooth closed manifold with a smooth involution T whose fixed point set is a disjoint union of an even-dimensional real projective space and a Dold manifold. In some cases, the equivariant bordism cl...Let （M, T） be a smooth closed manifold with a smooth involution T whose fixed point set is a disjoint union of an even-dimensional real projective space and a Dold manifold. In some cases, the equivariant bordism classes of （M, T） are determined.展开更多
Let （M, T） be a closed manifold with an involution T. The fixed point set of T is F. In this article, bordism classes of the involutions with fixed point set F = ^mUi=1 CPi（1）×HPi（n） are determined, where C...Let （M, T） be a closed manifold with an involution T. The fixed point set of T is F. In this article, bordism classes of the involutions with fixed point set F = ^mUi=1 CPi（1）×HPi（n） are determined, where CP（1） and HP（n） denote the 1-dimensional i=1 complex projective space and n-dimensional quaternionic projective space respectively, and n=2^p-2or n=2^p-1（p〉 1）.展开更多
In this paper,we study all the possible bordism classes for a smooth involution on a smooth closed manifold whose fixed point set is RP(1)∪P(m,n),m>0,n>0.
We define an m-involution to be a matrix K ∈ Cn×n for which Km -= I. In this article, we investigate the class Sm （A） of m-involutions that commute with a diagonalizable matrix A E Cn×n. A number of basic...We define an m-involution to be a matrix K ∈ Cn×n for which Km -= I. In this article, we investigate the class Sm （A） of m-involutions that commute with a diagonalizable matrix A E Cn×n. A number of basic properties of Sm （A） and its related subclass Sm （A, X） are given, where X is an eigenvector matrix of A. Among them, Sm （A） is shown to have a torsion group structure under matrix multiplication if A has distinct eigenvalues and has non-denumerable cardinality otherwise. The constructive definition of Sm （A, X） allows one to generate all m-involutions commuting with a matrix with distinct eigenvalues. Some related results are also given for the class S,, （A） of m-involutions that anti-commute with a matrix A ∈ Cnn×n.展开更多
We prove that the following three properties cannot match each other on a lattice, that differentials of coordinate functions are algebraically dependent on their involutive conjugates, that the involution on a lattic...We prove that the following three properties cannot match each other on a lattice, that differentials of coordinate functions are algebraically dependent on their involutive conjugates, that the involution on a lattice is an antihomomorphism, and that differential calculus has a natural continuum limit.展开更多
Leptin, a protein hormone produced and secreted predominantly by white adipose tissue, has a critical role in the regulation and coordination of energy metabolism. Leptin is produced in the mammary gland by the fat ti...Leptin, a protein hormone produced and secreted predominantly by white adipose tissue, has a critical role in the regulation and coordination of energy metabolism. Leptin is produced in the mammary gland by the fat tissue or by the mammary epithelium. In vitro study has shown that leptin triggers apoptosis in mammary epithelial cells. Mammary gland involution is characterized by extensive apoptosis of the epithelial cells. At the onset of involution, STAT3 is specifically activated.Various studies show that leptin act as a paracrine and autocrin factor to influence mammary epithelial cell proliferation and differentiation. This paper reviewed the function of leptin to the involution of mammary gland.展开更多
We construct an involution over Dyck paths,which implies the distribution of statistics“the number of peak”,“the number of returns”and“the height of the last peak”.As an application,equidistributions of several ...We construct an involution over Dyck paths,which implies the distribution of statistics“the number of peak”,“the number of returns”and“the height of the last peak”.As an application,equidistributions of several Stirling statistics over 132-avoiding and 321-avoiding permutations are presented.展开更多
文摘针对从视频中恢复三维人体模型运动序列时,由于图像特征提取能力有限而导致三维人体模型运动序列重建效果不佳的问题,提出了一种基于Involution卷积的三维人体重建方法。首先为了引入自注意力机制,在ResNet50网络结构中加入Involution算子,获取视频图像帧的特征向量,然后使用姿态估计网络和形状估计网络获取人体姿势以及形状参数,最后使用蒙皮多人线性模型(skinned multi-person linear model, SMPL)生成三维人体模型的运动序列。在三维姿态户外数据集(3D pose in the wild, 3DPW)上与视频人体姿态形状估计推理(video inference for body pose and shape estimation, VIBE)方法以及时间一致性网格恢复(temporally consistent mesh recovery, TCMR)方法进行对比实验,平均精度相比于VIBE、TCMR分别提升了3.1%、0.7%,能够为运动捕捉、三维人体动画制作等工作提供更为准确的三维人体模型。
文摘针对通用目标检测算法在检测小目标时存在错检和漏检等问题,提出了一种小目标检测算法IPH(Involution Prediction Head),将其运用在YOLOv4和YOLOv5的检测头部分,在VOC2007数据集上的实验结果表明,运用IPH后的YOLOv4小目标检测精度APs(AP for small objects)相比原始算法提升了1.1%,在YOLOv5上的APs更是提升了5.9%。经智能交通检测数据集进一步检验,IPH算法和去下采样能有效提升小目标检测精度,减少错检和漏检的情况。
文摘With a special matter, Chinese literature has differences with traditional theories from western countries in essence, so that Chinese literature demonstrates its renovation and involution. The main reason is its trends of modernity. The transformation from oversea exchange is very important. This paper mainly explains the specific content of paradox of Chinese literature in mo dernity, and explores the reasons for differences between China and western countries.
基金Project supported by the Zhejiang Provincial Natural Science Foundation of China(No.LZ14C200001)
文摘Objective: Apios americana,a plant used as a staple ingredient of native American diets,has various properties,including anti-cancer,anti-hyperglycemic,hypotensive,and anti-inflammatory activity.In Japan,Apios is used as a post-natal medication.After parturition,women undergo a period of recovery as they return to pre-pregnancy conditions.However,few health products that aid post-partum recovery are on the market.We explored whether Apios can accelerate the post-partum recovery process,in particular the involution of the uterus.Methods: Female rats kept in individual cages were mated with two male rats,with the exception of the control group(female rats without mating,on basal diet;n=6).After delivery,rats were divided into five groups based on their diet: basal diet(model;n=6);basal diet+oral intake at 5.4 g/kg of Chanfukang granules(a Chinese patent medicine preparation for post-partum lochia)(positive;n=6);basal diet containing 10% Apios powder(low;n=6);basal diet containing 20% Apios powder(medium;n=6);basal diet containing 40% Apios powder(high;n=6).Five days later,uteri and spleens were weighed.Uterus and spleen indices for each rat were calculated by dividing visceral weight by the total weight.Hormone and cytokine concentrations were measured using enzyme-linked immunosorbent assay(ELISA).Histological analysis of uteri was completed using hematoxylin and eosin(H&E) staining.Expression of matrix metalloproteinases and inhibitors in uteri was measured by western blotting.Results: Our results showed that Apios treatment reduced the post-partum uterus index and regulated the hormone concentrations.Moreover,we found that the process of uterine involution was accelerated,based on morphological changes in the uterus.In addition,our results indicated that Apios alleviated the inflammatory response induced by the involution process.Transforming growth factor β was also found to be regulated by Apios.There were significant downregulation of matrix metalloproteinases and upregulation of their inhibitors by Apios,which suggested that Apios increased the rate of the collagen clearance process.Conclusions: These results,based on experimental observations at the molecular and protein levels,verified our hypothesis that Apios can improve uterine involution,and demonstrated the potential application of Apios in post-partum care.
基金Supported by NSFC(11371118)SRFDP(20121303110004)+1 种基金HNSF(A2011205075)HNUHH(20110403)
文摘Let （M, T） be a smooth closed manifold with a smooth involution T whose fixed point set is a disjoint union of an even-dimensional real projective space and a Dold manifold. In some cases, the equivariant bordism classes of （M, T） are determined.
基金supported by NSFC (1097105011001073+3 种基金10901045)HNSFC(A2010000828)FHUST (XL201043QD201021)
文摘Let （M, T） be a closed manifold with an involution T. The fixed point set of T is F. In this article, bordism classes of the involutions with fixed point set F = ^mUi=1 CPi（1）×HPi（n） are determined, where CP（1） and HP（n） denote the 1-dimensional i=1 complex projective space and n-dimensional quaternionic projective space respectively, and n=2^p-2or n=2^p-1（p〉 1）.
文摘In this paper,we study all the possible bordism classes for a smooth involution on a smooth closed manifold whose fixed point set is RP(1)∪P(m,n),m>0,n>0.
文摘We define an m-involution to be a matrix K ∈ Cn×n for which Km -= I. In this article, we investigate the class Sm （A） of m-involutions that commute with a diagonalizable matrix A E Cn×n. A number of basic properties of Sm （A） and its related subclass Sm （A, X） are given, where X is an eigenvector matrix of A. Among them, Sm （A） is shown to have a torsion group structure under matrix multiplication if A has distinct eigenvalues and has non-denumerable cardinality otherwise. The constructive definition of Sm （A, X） allows one to generate all m-involutions commuting with a matrix with distinct eigenvalues. Some related results are also given for the class S,, （A） of m-involutions that anti-commute with a matrix A ∈ Cnn×n.
文摘We prove that the following three properties cannot match each other on a lattice, that differentials of coordinate functions are algebraically dependent on their involutive conjugates, that the involution on a lattice is an antihomomorphism, and that differential calculus has a natural continuum limit.
基金Supported by National Natural Sciences Foundation(30671538)
文摘Leptin, a protein hormone produced and secreted predominantly by white adipose tissue, has a critical role in the regulation and coordination of energy metabolism. Leptin is produced in the mammary gland by the fat tissue or by the mammary epithelium. In vitro study has shown that leptin triggers apoptosis in mammary epithelial cells. Mammary gland involution is characterized by extensive apoptosis of the epithelial cells. At the onset of involution, STAT3 is specifically activated.Various studies show that leptin act as a paracrine and autocrin factor to influence mammary epithelial cell proliferation and differentiation. This paper reviewed the function of leptin to the involution of mammary gland.
基金National Natural Science Foundation of China(Grant No.11701420)。
文摘We construct an involution over Dyck paths,which implies the distribution of statistics“the number of peak”,“the number of returns”and“the height of the last peak”.As an application,equidistributions of several Stirling statistics over 132-avoiding and 321-avoiding permutations are presented.
