基于S形速度曲线的键合头运动控制系统研究与分析

根据用户工艺需求,针对全自动芯片键合设备的运动控制模块以及键合头子模块开展需求分析,结合典型试验,设计出基于S形速度曲线的键合头运动控制系统,根据S形速度曲线重新规划了键合头的运动轨迹,使其对芯片键合周期缩短的同时也保证了键合精度。

改进YOLOX-s的密集垃圾检测方法

针对密集堆放的多种类垃圾检测存在识别率低、定位不够准确和待测目标被误检、漏检问题,提出了一种融合多头自注意力机制改进YOLOX-s的垃圾检测方法。在特征提取网络嵌入SwinTransformer模块,引入基于滑窗操作的多头自注意力机制,使得网络兼顾全局特征信息和重点特征信息,减少误检现象;在预测输出网络中使用可变形卷积,对初始预测框进行精细化处理,提高定位精度;在EIoU损失的基础上引入加权系数,提出加权IoU-EIoU损失,自适应调整训练时不同阶段不同损失的关注程度,进一步加快训练网络的收敛速度。在公开204类垃圾检测数据集中进行测试,结果表明,所提改进算法的平均精度均值分别可达80.5%和92.5%,优于当前流行目标检测算法,且检测速度快,满足实时性需求。

Review of the Relocation of General Zhang Fei’s Temple in View of the Three Gorges Dam Project

As a national cultural property,General Zhang Fei’s Temple is the largest ancient architectural complex in the Three Gorges of the Yangtze River.It was built in the Han Dynasty and has a long history of nearly 2,000 years.In 1994,the Chinese government launched the Three Gorges Dam project at the Yangtze River and implemented the largest relocation project for the General Zhang Fei Temple to prevent it from being submerged.The temple was relocated 32 kilometers upstream along with the local people of Yunyang County,and the historic environment was rebuilt on the opposite side of the migrant city of New Yunyang County.The temple was restored successfully and the tradition of offering sacrifices to General Zhang Fei continued in the local community.The relocation project lasted for 8 years and became the largest cultural heritage conservation project of the People’s Republic of China at the end of the 20th century.This paper comprehensively summarizes and reviews the project goals,implementation process,and project highlights of this relocation,so as to provide an important case reference for heritage conservation projects in the future.

Department of Otolaryngology Head and Neck Surgery of Chinese PLA General Hospital (National Key Discipline)

Institute of Otolaryngology of Chinese PLA ( Key Laboratory for the Prevention of Acoustic Trauma,PLA)Key Laboratory of Hearing Impairment Science(Chinese PLA Medical School)Ministry of Education Led by four generations of leadership from late Prof. JIANG Sichang (academician, Chinese Academy of Engineering), Prof.YANG Weiyan (Honorary President, Division of Otolaryngology

Momentum as Translations at Conformal Infinity

Although General Relativity is the classic example of a physical theory based on differential geometry, the momentum tensor is the only part of the field equation that is not derived from or interpreted with differential geometry. This work extends General Relativity and Einstein-Cartan theory by augmenting the Poincaré group with projective (special) conformal transformations, which are translations at conformal infinity. Momentum becomes a part of the differential geometry of spacetime. The Lie algebra of these transformations is represented by vectorfields on an associated Minkowski fiber space. Variation of projective conformal scalar curvature generates a 2-index tensor that serves as linear momentum in the field equations of General Relativity. The computation yields a constructive realization of Mach’s principle: local inertia is determined by local motion relative to mass at conformal infinity in each fiber. The vectorfields have a cellular structure that is similar to that of turbulent fluids.

The Department of Otolaryngology Head and Neck Surgery,PLA General Hospital (national key academic unit) The PLA Institute of Otolaryngology (PLA key laboratory for acoustic trauma) The PLA Medical College Department of Deafness Education Key Laboratory

Led by four generations of leadership from late Prof.JIANG Sichang(academician,Chinese Academy of Engineering),Prof.YANG Weiyan(Honorary President,Division of Otolaryngology Head and Neck Surgery,Chinese Medical Association),Prof.HAN Dongyi(President Elected,Division of Otolaryngology Head and Neck Surgery,Chinese Medical Association)to now Prof.YANG Shiming(President,Division of Otolaryngologists,

IMPACTS OF PENETRATION THERAPY WITH HEAD ELECTRICAL ACUPUNCTURE ON PROLIFERATION OF NEURAL STEM CELLS IN SUBSTANTIA NIGRA OF RAT MODEL OF PARKINSON'S DISEASE

Objective To probe into the function mechanism of penetration therapy with head electrical acupuncture on Parkinson＇s disease. Methods Microinjection of 6-hydroxydopamin （6-OHDA） on the left cor- pus striatum was adopted to prepare rotation model of Parkinson^s disease in rat. Penetration therapy with head electrical acupuncture was administered in treatment. Normal group, sham-operation group, model group and penetration therapy group were set up. （1）lmmunohistochemical （IHC） method was used to test the morphology and count of positive cell of tyrosine hydroxylase （TH）. （2）RT-PCR technology was used to detect the expression of nestin mRNA of neural stem cell （NSC）. Results （1）Compared with model group, in pene- tration therapy group, the expressions of TH-positive neurons in immune response were increased in areal density （AD）, numerical density （ND） and integrating optic density （P〈0.05）. （2）Compared with model group, in penetration therapy group, the expression of nestin mRNA was increased （P〈0. 05）. Conclusion Penetration therapy with head electrical acupuncture promotes the proliferation of endogenous neural stem cells in substantia nigra of rat model of Parkinson＇s disease.

基于S-YOLO V5和Vision Transformer的视频内容描述算法

视频内容描述的自动生成是结合计算机视觉和自然语言处理等相关技术提出的一种新型交叉学习任务。针对当前视频内容生成描述模型可读性不佳的问题,本研究提出一种基于S-YOLO V5和Vison Transformer(ViT)的视频内容描述算法。首先,基于神经网络模型KATNA提取关键帧,以最少帧数进行模型训练;其次,利用S-YOLO V5模型提取视频帧中的语义信息,并结合预训练ResNet101模型和预训练C3D模型提取视频静态视觉特征和动态视觉特征,并对两种模态特征进行融合;然后,基于ViT结构的强大长距离编码能力,构建模型编码器对融合特征进行长距离依赖编码;最后,将编码器的输出作为LSTM解码器的输入,依次输出预测词,生成最终的自然语言描述。通过在MSR-VTT数据集上进行测试,本研究模型的BLEU-4、METEOR、ROUGEL和CIDEr分别为42.9、28.8、62.4和51.4;在MSVD数据集上进行测试,本研究模型的BLEU-4、METEOR、ROUGEL和CIDEr分别为56.8、37.6、74.5以及98.5。与当前主流模型相比,本研究模型在多项评价指标上表现优异。

《大卫·科波菲尔》不同译本中“shake one's head”译文对比研究

人们对日常较为熟悉的表达不太谨慎,所以常常出现理解错误,翻译时亦如此。"shake one's head"是一个较为常见的短语,但在《大卫·科波菲尔》的不同译本中,它却有着不同的译文,有些甚至是完全相反的意思。从对等性的角度讲,正确的译文只有一个,它不可能同时是两个意思完全相反的译文。通过对比研究,"shake one's head"应翻译为"点头",探其原因,应与句子含否定意义有关。

Dynamics of vascular volume and hemodilution of lactated Ringer’s solution in patients during induction of general and epidural anesthesia

Objective： To investigate the dynamics of vascular volume and the plasma dilution of lactated Ringer＇s solution in patients during the induction of general and epidural anesthesia. Methods： The hemodilution of i.v. infusion of 1000 ml of lactated Ringer＇s solution over 60 min was studied in patients undergoing general （n=31） and epidural （n= 22） anesthesia. Heart rate, arterial blood pressure and hemoglobin （Hb） concentration were measured every 5 rain during the study. Surgery was not started until the study period had been completed. Results： General anesthesia caused the greater decrease of mean arterial blood pressure （MAP） （mean 15% versus 9%; P〈0.01） and thereby followed by a more pronounced plasma dilution, blood volume expansion （VE） and blood volume expansion efficiency （VEE）. A strong linear correlation between hemodilution and the reduction in MAP （r=-0.50;P〈0.01） was found. At the end of infusion, patients undergoing general anesthesia retained 47% （SD 19%） of the infused fluid in the circulation, while epidural anesthesia retained 29% （SD 13%） （P〈0.001）. Correspondingly, a fewer urine output （mean 89 ml versus 156 ml; P〈0.05） and extravascular expansion （454 ml versus 551 ml; P〈0.05） were found during general anesthesia. Conclusion： We concluded that the induction of general anesthesia caused more hemodilution, volume expansion and volume expansion efficiency than epidural anesthesia, which was triggered only by the lower MAP.

pLoc-mGpos: Incorporate Key Gene Ontology Information into General PseAAC for Predicting Subcellular Localization of Gram-Positive Bacterial Proteins

The basic unit in life is cell.?It contains many protein molecules located at its different organelles. The growth and reproduction of a cell as well as most of its other biological functions are performed via these proteins. But proteins in different organelles or subcellular locations have different functions. Facing?the avalanche of protein sequences generated in the postgenomic age, we are challenged to develop high throughput tools for identifying the subcellular localization of proteins based on their sequence information alone. Although considerable efforts have been made in this regard, the problem is far apart from being solved yet. Most existing methods can be used to deal with single-location proteins only. Actually, proteins with multi-locations may have some special biological functions that are particularly important for drug targets. Using the ML-GKR (Multi-Label Gaussian Kernel Regression) method,?we developed a new predictor called “pLoc-mGpos” by in-depth extracting the key information from GO (Gene Ontology) into the Chou’s general PseAAC (Pseudo Amino Acid Composition)?for predicting the subcellular localization of Gram-positive bacterial proteins with both single and multiple location sites. Rigorous cross-validation on a same stringent benchmark dataset indicated that the proposed pLoc-mGpos predictor is remarkably superior to “iLoc-Gpos”, the state-of-the-art predictor for the same purpose.?To maximize the convenience of most experimental scientists, a user-friendly web-server for the new powerful predictor has been established at http://www.jci-bioinfo.cn/pLoc-mGpos/, by which users can easily get their desired results without the need to go through the complicated mathematics involved.

Comparative Study and Safe Dose Analysis of Dexmedetomidine in the Prevention of Emergence Agitation and Emergency Delirium in Children Undergoing General Anesthesia

The purpose of this paper is to explore the safe and effective dose of dexmedetomidin for the prevention of agitation and delirium during the awakening period for children undergoing general anesthesia. Samples of 989 cases are collected from children with comprehensive treatment of dental caries, and were randomly divided into four groups. Group A, group B and group C were intravenously at constant speed （60 mL/h）, 0.5 and 0.25 infusion with 1 μg/kg dexmedetomidine. Group D （control group） was intravenously saline at the same speed. The score of 5-point scale and the incidence of ED （emergency delirium） and EA （emergence agitation） in four groups were compared. Comparison of four groups of CHIPPS （children and infants postoperative pain） score, the amount of operation time and record seven halothane （TO）, time to stop cover drug withdrawal of laryngeal anesthesia （TM）, eye opening time （TE）, independent records of children at the time of ICU stay after anesthesia （TP）. Results show that there was no significant difference between the four groups （p 〉 0.05）, among which the TM in B, C groups was significantly higher than that in A, D groups （p 〈 0.05）. Group C was significantly higher than group B （p 〈 0.05）. There was no significant difference in TE and TP between the A, B, D groups （p 〉 0. 05）. TE in group C was significantly higher than that in groups A, D （p 〉 0. 05）. The TP of group C was significantly higher than that of groups A, D （p 〈 0.05）, but there was no significant difference between the B, C groups （p 〉 0.05）. The incidence rates of EA and ED in groups A and B were significantly lower than those in group D （p 〈 0.05）. Group C was significantly lower than group A （p 〈 0.05）. There was no significant difference between group C and group C （p 〉 0.05）. The CHIPPS score and sevoflurane dosage in groups A and B were significantly lower than those in group D （p 〈 0.05）. Group C was significantly lower than group A （p 〈 0.05）. There was no significant difference between group C （p 〉 0.05）. Conclusion： the dose of dexmetomidine 0.5 μg/kg in children with general anesthesia can prevent restlessness and delirium after operation.

Very Original Proofs of Two Famous Problems: “Are There Any Odd Perfect Numbers?” (Unsolved until to Date) and “Fermat’s Last Theorem: A New Proof of Theorem (Less than One and a Half Pages) and Its Generalization”

This article presents very original and relatively brief or very brief proofs about of two famous problems: 1) Are there any odd perfect numbers? and 2) “Fermat’s last theorem: A new proof of theorem and its generalization”. They are achieved with elementary mathematics. This is why these proofs can be easily understood by any mathematician or anyone who knows basic mathematics. Note that, in both problems, proof by contradiction was used as a method of proof. The first of the two problems to date has not been resolved. Its proof is completely original and was not based on the work of other researchers. On the contrary, it was based on a simple observation that all natural divisors of a positive integer appear in pairs. The aim of the first work is to solve one of the unsolved, for many years, problems of the mathematics which belong to the field of number theory. I believe that if the present proof is recognized by the mathematical community, it may signal a different way of solving unsolved problems. For the second problem, it is very important the fact that it is generalized to an arbitrarily large number of variables. This generalization is essentially a new theorem in the field of the number theory. To the classical problem, two solutions are given, which are presented in the chronological order in which they were achieved. Note that the second solution is very short and does not exceed one and a half pages. This leads me to believe that Fermat, as a great mathematician was not lying and that he had probably solved the problem, as he stated in his historic its letter, with a correspondingly brief solution. To win the bet on the question of whether Fermat was telling truth or lying, go immediately to the end of this article before the General Conclusions.

PROVISIONS OF THE CUSTOMS OF THE PEOPLE’S REPUBLIC OF CHINA ON EXTERNAL AUDIT AND CERTIFICATE OF EXTERNAL AUDIT ISSUED RECENTLY BY THE GENERAL ADMINISTRATION OF CUSTOMS OF THE PEOPLE’S REPUBLIC OF CHINA

In accordance with the regulations as stipulated in the Pro-visions of the Customs of the People’s Republic of China on Ex-ternal Audit, the Customs officers engaged in external audit shalluse the Certificate of External Audit of the Customs (hereinafterreferred to as Certificate) as of June 5, 1997. The Certificate has ablack leather outer covering and is inlaid inside with a pierced andguilded customs emblem, which consists of the red national em-blem in its upper part, and a key and a truncheon encircled by earsof wheat in its lower part. Put in a leather covering, the Certificateis a card sealed up with plastics, on which there is a bareheadedcolour photo of the holder in the Customs uniform and with a

Class of Charged Fluid Balls in General Relativity

In the present study, we have obtained a new analytical solution of combined Einstein-Maxwell field equations describing the interior field of a ball having static spherically symmetric isotropic charged fluid within it. The charge and electric field intensity are zero at the center and monotonically increasing towards the boundary of the fluid ball. Besides these, adiabatic index is also increasing towards the boundary and becomes infinite on it. All other physical quantities such as pressure, density, adiabatic speed of sound, charge density, adiabatic index are monotonically decreasing towards the surface. Causality condition is obeyed at the center of ball. In the limiting case of vanishingly small charge, the solution degenerates into Schwarzchild uniform density solution for electrically neutral fluid. The solution joins smoothly to the Reissner-Nordstrom solution over the boundary. We have constructed a neutron star model by assuming the surface density . The mass of the neutron star comes with radius 14.574 km.

On the Significance of Saussure's Course in General Linguistics

Saussure, the greatest linguist in the 20^(th) century, is the founder of modern linguistics, semiology as well as structuralism linguistics. Moreover, his ideas have have influenced a great number of linguists in the last ninety years. This paper aims to present and comment on some of his ideas in one of this masterworks—Course in General Linguistics. In the end, the author proposes some suggestions for further study.

General Washington's Journey to Freedom

为争取美国自由的八年战争终于结束,它使人筋疲力尽。英国军队已经从纽约及其它港口即自1781年在约克镇惨败之后所坚守的地点撤走。1783年12月末,华盛顿将军在两个侍从武官的跟随下骑马朝南部走,他要去辞掉美军总司令的职务。

Trace Formulae of Characteristic Polynomial and Cayley-HamUton's Theorem, and Applications to Chiral Perturbation Theory and General Relativity

By using combinatorics, we give a new proof for the recurrence relations of the characteristic polynomial coefficients, and we further obtain an explicit expression for the generic term of the coefficient sequence, which yields the trace formulae of the Cayley-Hamilton＇s theorem with all coefficients explicitly given. This implies a byproduct, a complete expression for the determinant of any finite-dimensional matrix in terms of the traces of its successive powers. And we discuss some of their applications to ehiral perturbation theory and general relativity.