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| 1 | 基于应用层负载均衡策略的分析与研究显示文摘介绍了Round Robin(RR),Weighted Round Robin(WRR),Least Connection(LC)和Weighted Least Connection(WLC)四种负载均衡算法,对这四种算法进行性能仿真。根据模拟得到的相关数据绘制各个算法的负载均衡度性能曲线,并对每个算法进行了性能分析。在此基础上设置三种不同的模拟模型,对四种算法进行更深入的测试和性能比较。 | 张前进 齐美彬 李莉 | 2007 | 计算机工程与应用2007，43，32： | 22 |
| 2 | Three-Dimensional Thermo-mechanical Coupled FEM Simulation for Hot Continuous Rolling of Large-Diameter Mandrel Bar显示文摘Based on the important boundary conditions of rolling simulation including friction, heat conduction and interactionsof the workpiece and rolls, the hot continuous rolling processes of large-diameter mandrel round bar (200 mm indiameter) in 6VH-stand hot tandem mill are successfully simulated by three-dimensional coupled thermomechanicalelastoplastic finite element method (FEM). The distributions of stress, strain, temperature and the rolling force andtorque for the two-pass and four-pass continuous rolling are calculated respectively. Thus, the two and four-passroll schedules are verified, respectively. The simulation results show that it is safe to produce 200 mm round barby the two-pass (oval pass and round pass) continuous rolling on the existing equipment compared to the four-passcontinuous rolling. There are concave surfaces and increased widths occurring at the end of rolled billet due touneven deformations between the outside and inside of the workpiece as well as the free spreading close to the rollgap of the final pass. | Huiping HONG Yonglin KANG Changtao FENG Xiqiang CHEN | 2003 | Journal of Materials Science & Technology2003，19，z1： | 13 |
| 3 | 分布式Web服务器中负载均衡的实现显示文摘实现和测试了一种可扩展的分布式Web服务器原型。原型由多台接收和处理TCP连接的服务器通过负载均衡集群而成,主机IP地址利用Round Robin DNS发布,任意主机都可以接收客户端的请求。一旦当客户试图建立连接,主机要决定接收连接提供服务还是重定向连接到其它主机。每台主机保持集群定期组播的系统负载信息,并利用低负荷的IP封装IP技术重构数据包来重定向请求。性能测试表明这种技术比RR-DNS具有更好的性能,而且利用系统负载状态的重定向连接比无状态的重定向效果更好。 | 汪建球 张忠能 | 2003 | 计算机工程2003，29，15： | 9 |
| 4 | 高速浮点乘法器设计显示文摘设计了一种符合IEEE-754标准的32bits高速CMOS浮点乘法器。该乘法器采用MBA算法和基于4:2compressor的树型结构完成CarrySave形式的部分积压缩,再由高速CarrySelect加法器求得乘积。电路设计采用了新型的高速加法运算单元。乘法器采用0.35μm制程,内含19,197个晶体管。3.3V工作电压下(室温),乘法器延迟时间为3.807ns,功耗为107mW@100MHz。 | 吴金 应征 | 2005 | 电路与系统学报2005，10，6： | 7 |
| 5 | 一种交叉点小缓存CICQ交换机高性能调度算法显示文摘CICQ(combinedinput crosspoint queued/queuing)结构具有内部无需提速及输入和输出的分组调度可以分布并行执行的优点,使用RR(round robin)算法在高性能交换机设计中具有独特优势·然而,CICQ交换机使用RR算法在非均匀流量下不能达到100%的吞吐率·RR-RR算法在非均匀流量下性能有两个关键因素组成:中央缓存容量大小和输入端长队列未能及时服务导致的服务损失·基于理论分析,提出了一种小缓存高性能调度算法,仿真结果表明,即使在1个信元缓存的情况下新算法在均匀与非均匀流量下均能达到100%吞吐率·新算法仅具有O(1)的复杂度,保持了RR-RR算法简单有效特性,同时克服了RR-RR算法在非均匀流量下的不稳定性· | 李勇 罗军舟 吴俊 | 2006 | 计算机研究与发展2006，43，12： | 6 |
| 6 | Excel在财务数据处理中的应用技巧探究显示文摘在财务处理中我们经常要面对大量数据,要从中总结出一些数据规律和报表元素,虽然现在大多都有财务软件支持,但也有很多数据需要我们自行处理,excel给了我们一个很好的平台,笔者根据多年的经验,对其常用函数在会计中的应用进行总结。 | 罗孝骞 郭娜娜 | 2013 | 鸡西大学学报(综合版)2013，13，10： | 4 |
| 7 | Clinical and computed tomography features of adult abdominopelvic desmoplastic small round cell tumor显示文摘To investigate the clinical and computed tomography(CT)features of desmoplastic small round cell tumor(DSRCT),we retrospectively analyzed the clinical presentations,treatment and outcome,as well as CT manifestations of four cases of DSRCT confirmed by surgery and pathology.The CT manifestations of DSRCT were as follows:(1)multiple soft-tissue masses or diffuse peritoneal thickening in the abdomen and pelvis,with the dominant mass usually located in the pelvic cavity;(2)masses without an apparent organbased primary site;(3)mild to moderate homogeneous or heterogeneous enhancement in solid area on enhanced CT;and(4)secondary manifestations,such as ascites,hepatic metastases,lymphadenopathy,hydronephrosis and hydroureter.The prognosis and overall survival rates were generally poor.Commonly used treatment strategies including aggressive tumor resection,polychemotherapy,and radiotherapy,showed various therapeutic effects.CT of DSRCT shows characteristic features that are helpful in diagnosis.Early discovery and complete resection,coupled with postoperative adjuvant chemotherapy,are important for prognosis of DSRCT.Whole abdominopelvic rather than locoregional radiotherapy is more effective for unresectable DSRCT. | Xun-Ze Shen Jian-Guo Zhao Jian-Jun Wu Fang Liu | 2014 | World Journal of Gastroenterology2014，20，17： | 4 |
| 8 | Suppression of Effect of Uneven Velocity in Submerged Entry Nozzle in Round Billet Continuous Casting Process Using Electromagnetic Swirling Flow显示文摘Sliding gate control system is widely employed in continuous casting process of steel to control flow rate of molten steel.As molten steel passes through a sliding gate,uneven flow develops.This will cause asymmetrical distribution of flow and temperature field in mold consequently,formation of vortex near the nozzle and entrapment of CC powder into the molten steel.etc,which have negative effect on process productivity and product quality.To suppress the uneven flow,electromagnetic swirling flow has been proposed to impose on the flow in submerged entry nozzle below the sliding gate.In this study the uneven flow developed by incompletely open sliding gate and the suppression of this uneven flow using electromagnetic swirling flow are numerically studied in round billet continuous casting of steel process.The improvement of the flow and temperature filed in the submerged entry nozzle and mold are investigated.It is found that:The uneven velocity in nozzle can be suppressed by electromagnetic swirling flow,and the flow and temperature field in mold be improved obviously;With the increase of electromagnetic swirling intensity,the effect of uneven flow can be almost completely suppressed. | LI De-wei SU Zhi-jian MARUKAWA Katsukiyo HE Ji-cheng | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 4 |
| 9 | Quantitative Prediction of Reduction in Large Pipe Setting Round Process显示文摘The control manner during the process to ensure the quality of pipe products mainly relies on the operator's experience, so it is very necessary to study the setting round process and obtain its spring-back law. The setting round process is shaping an oval section pipe into circular section, so it is difficult to provide a quantificational analysis for its spring-back process because of the curvature inequality of pipe section neutral layer. However, the spring-back law of the circle-oval process can be easily predicted. The experimental method is firstly used to establish the equivalent effect between the setting round process and the circle-oval process. The setting round process can be converted into the circle-oval process. There are two difficulties in the theoretical analysis for the circle-oval process: elastic-plastic bending problem of curved beam; statically indeterminate problem. A quantitative analytic method for the circle-oval process is presented on the basis of combination of the spring-back law of plane curved beam with the element dividing idea in finite element method. The ovality after unloading versus the relative reduction is plotted with analytical and experimental results respectively, which shows a fair agreement. Finally, the method of quantitative prediction of reduction for large pipe setting round is given based on the equivalent effect and the analytical results. Five pipes, which are needed to be set round, are used to carry out experiment so as to verify this method. The results of verification experiment indicates that, in the experimental range, the residual ovality are all under 0.35% after the once only setting round with the theoretical prediction reductions. It is much less than the 1% requirement of pipe standard. Applying the established theoretical analysis is able to correct the pipe ovality with sufficient accuracy, which provides theoretical direction to plant use. | ZHAO Jun ZHAN Peipei MA Rui ZHAI Ruixue | 2013 | Chinese Journal of Mechanical Engineering2013，26，4： | 4 |
| 10 | 两种除草剂对空心莲子草的防除效果比较显示文摘空心莲子草是世界性恶性杂草。研究用使它隆乳油2g/L和Round up 15mL/L喷施空心莲子草进行防除效果比较试验。结果表明:喷药后7d,空心莲子草受害的形态和防除快速效果看,Round up防除效果优于使它隆乳油的,药后30天,从根系生理指标测定看,除Round up处理的根系硝酸还原酶活性明显高于使它隆乳油处理的外,二者对根系其他生理指标的影响无明显差异;从第二年空心莲子草复发情况看,Round up处理的区域空心莲子草无复发,而使它隆乳油处理的杂草有3%~5%左右的复发。Round up防除空心莲子草的效果优于使它隆乳油。 | 叶梅荣 孙玉林 | 2010 | 中国林副特产2010，，1： | 3 |
| 11 | 耐麦草畏大豆或能解决加拿大草甘膦抗性杂草问题显示文摘去年夏天,加拿大安大略南部地区免耕大豆田中杂草频现,严重影响了作物的产量。其中最突出的杂草是加拿大飞蓬,这也是草甘膦抗性问题中出现的最新挑战。除草剂抗性问题已形成恶性循环,安大略地区需要找出一个创新的解决方案。继20世纪80年代发现了抗三嗪类除草剂的杂草之后,每类新出现的防效好的除草剂在使用几年之后都会出现抗性问题。草甘膦于1974年研发成功, | 余露 | 2015 | 农药市场信息2015，0，2： | 2 |
| 12 | Desmoplastic small round cell tumor with atypical immunohistochemical profile and rhabdoid-like differentiation显示文摘Desmoplastic small round cell tumor(DSRCT) is a rare,aggressive malignant neoplasm of unknown origin, and is comprised of small round cells with a characteristic desmoplastic stroma. DSRCT typically expresses epithelial, mesenchymal and neural markers simultaneously. We describe a case of DSRCT with an atypical immunohistochemical profile and rhabdoid-like tumor cells on electron microscopy. In the present case, the neoplastic cells were positive only for vimentin, desmin(cytoplasmic membranous pattern) and CD56,and negative for smooth muscle actin, synaptophysin,CD117, CD45, myogenin, CAM5.2, pancytokeratin,WT1, EMA, CD99, neurofilament, CD34 and p53. Ki67 showed a low proliferative activity. Electron microscopy showed focal rhabdoid differentiation. However, INI-1(SNF-5/BAF47) demonstrated preservation of nuclear positivity in the neoplastic cells. Cytogenetic studies showed translocation t(11;22)(p13;q12) confirming an EWSR1-WT1 translocation characteristic for DSRCT, and t(1;15)(q11;p11.2) of unknown significance. This case is a diagnostic challenge because of atypical immunohistochemical profile and cytogenetic study is crucial in rendering the correct diagnosis. | Li Liang Nina Tatevian Meenakshi Bhattacharjee Kuojen Tsao John Hicks | 2014 | World Journal of Clinical Cases2014，2，8： | 1 |
| 13 | The blow-up of the conformal mean curvature flow显示文摘In this paper, we introduce and study the conformal mean curvature flow of submanifolds of higher codimension in the Euclidean space R^n. This kind of flow is a special case of a general modified mean curvature flow which is of various origination. As the main result, we prove a blow-up theorem concluding that, under the conformal mean curvature flow in R^n, the maximum of the square norm of the second fundamental form of any compact submanifold tends to infinity in finite time. Furthermore, we also prove that the external conformal forced mean curvature flow of a compact submanifold in R^n with the same pinched condition as Andrews-Baker's will be convergent to a round point in finite time. | Xingxiao Li Di Zhang | 2020 | Science China Mathematics2020，63，4： | 1 |
| 14 | 20世纪初英国“圆桌”集团的起源显示文摘在英帝国由盛转衰的过程中,英国巩固帝国的努力从未间断,1909年成立的'圆桌'集团也开展了类似的活动。当前,西方学界对'圆桌'集团所进行的'帝国联邦'活动的研究已比较充分,但在其起源问题上的阐述大多相对含糊,不够明确。有鉴于此,笔者不揣浅陋,尝试对'圆桌'集团的起源作进一步的探讨。 | 石峰可 | 2014 | 史学月刊2014，，1： | 1 |
| 15 | Coherent Structure Visualization of Round Turbulent Jet显示文摘CoherentStructureVisualizationofRoundTurbulentJet*WangXilin(王希麟),GuHongxia(古红霞),LinWenyi(林文漪)DepartmentofEngineeringMechanics... | 王希麟 古红霞 林文漪 | 1997 | Tsinghua Science and Technology1997，2，2： | 1 |
| 16 | Round Table合作学习模式在《中药学》课程中的应用初探显示文摘目的:《中药学》课程的学习一般以理论教学为主,学习内容涵盖面广泛,记忆知识点繁杂,是学生在学习课程的最大挑战。方法:根据该门课程特点,我们引入了卡甘式合作学习策略——RoundTable实践模式,应用于该课程的合作学习教学过程中。结果:相关调查问卷结果显示,该合作学习模式获得了受访学生的肯定与好评,对教学氛围、学生的学习积极性和学习情绪激发都起到了正面的影响作用,为其他相关合作学习策略的设计与实践提供了参考。 | 浦益琼 王海颖 | 2019 | 中医药管理杂志2019，27，16： | 1 |
| 17 | SRG1,Encoding a Kinesin-4 Protein,Is an Important Factor for Determining Grain Shape in Rice显示文摘Grain shape is one of the important agronomic traits, which is closely related to the yield of rice.A new rice mutant, named small and round grain(srg1), was isolated from an indica cultivar Zhenong 34 by ethyl methane sulfonate(EMS) mutagenesis. The microscopic analysis showed that the cell length of spikelet in srg1 was decreased compared with that in wild type(WT), which caused the grain length short.Meanwhile, the grains of srg1 were wider than those of WT because of the increased cell layers in spikelet in the lateral direction. Therefore, the inhibition of cell expansion and increased cell proliferation collectively led to the small and round grain. By map-based cloning, the gene SRG1 was located on the short arm of chromosome 9, which encodes a kinesin-4 protein, represented by the gene LOC_Os09 g02650. A single nucleotide polymorphism, occurred in the 16 th exon of SRG1, led to premature translation stop in mutant. The cell cycle-related genes were up-regulated in srg1, which conferred that SRG1 controlled grain width through the cell proliferation. Since the role of SRG1 in regulating grain shape was not clarified well before, it is valuable to explore the mechanism of grain development. This study could, hence, provide a morphogenesis and molecular basis for elucidating the function of SRG1, as well as a new germplasm resource for the further study of grain development. | QIN Ran Delara AKHTER YANG Chengcong Ujjal Kumar NATH Jamal ESHAG JIN Xiaoli SHI Chunhai | 2018 | Rice science2018，25，6： | 1 |
| 18 | Congestion Control Algorithm for Resilient Packet Ring显示文摘A congestion control algorithm is proposed for resilient packet ring (RPR) in this paper. In thisalgorithm, nonlinear explicit rate feedback control is used to ensure fast convergence and smooth equilibriumbehavior. The algorithm combines explicit rate control with a deficit round robin (DRR) scheduler, which notonly ensures fairness, but also avoids the implementation difficulties of explicit rate control algorithms. Thealgorithm has good features of fairness, fast convergence, smooth equilibrium, Iow queue depth, and easyimplementation. It is insensitive to the loss of congestion control packets and can adapt to a wide range of linkrates and network scales. It has solved the unbalanced traffic problem of spatial reuse protocol (SRP). Thealgorithm can be implemented on the multi-access control layer of RPR nodes to ensure fair and efficient accessof the best-effort traffic. | 孔红伟 葛宁 阮方 冯重熙 | 2003 | Tsinghua Science and Technology2003，8，2： | 1 |
| 19 | Research on segregation control for round billet of anti-sulfur steel显示文摘The carbon segregation that occurs in a round billet leads to instability in the anti-sulfur steel pipe.The maximum difference in the C content of these billets can reach 0.08%,and the equiaxed grain ratio is about 37.0%.In this paper,reasonable casting and mixing parameters were obtained by a study of the casting process,mold electromagnetic stirring,and the final electromagnetic stirring process.First,a mathematical model was established for the solidification and heat transfer of round-billet continuous casting using the characteristics of the continuous-casting process for sulfur-resistant steel pipes.The relationship between the casting speed,cooling-water ratio,and thickness of the shell at the final stirring position was analyzed.Then,the electromagnetic force and the liquid steel flow velocity were simulated and used to obtain reasonable parameters for the mold and final electromagnetic stirring.Through optimization of the casting and electromagnetic stirring technologies,the equiaxed grain ratio of the continuous-casting round billet increased to 53.4%and the maximum difference in the C content of the billet reduced to 0.031%. | WANG Yingchun LIU Qilin LI Ying | 2020 | Baosteel Technical Research2020，14，1： | 1 |
| 20 | RESEARCH ON THE PARTICLE DISPERSION IN THE PARTICULATE TWO-PHASE ROUND JET显示文摘IntroductionTurbulentflowladenwithparticlesisacommonocurenceinbothnatureandindustry.Recentresearchhasshownthattheparticlecon... | 林建忠 林江 朱丽兵 | 1999 | Applied Mathematics and Mechanics(English Edition)1999，20，5： | 1 |
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