large

摘要： Large deformation contact problems generally involve highly nonlinear behaviors,which are very time-consuming and may lead to convergence issues.The finite particle method(FPM)effectively separates pure deformation from total motion in large deformation problems.In addition,the decoupled procedures of the FPM make it suitable for parallel computing,which may provide an approach to solve time-consuming issues.In this study,a graphics processing unit(GPU)-based parallel algorithm is proposed for two-dimensional large deformation contact problems.The fundamentals of the FPM for planar solids are first briefly introduced,including the equations of motion of particles and the internal forces of quadrilateral elements.Subsequently,a linked-list data structure suitable for parallel processing is built,and parallel global and local search algorithms are presented for contact detection.The contact forces are then derived and directly exerted on particles.The proposed method is implemented with main solution procedures executed in parallel on a GPU.Two verification problems comprising large deformation frictional contacts are presented,and the accuracy of the proposed algorithm is validated.Furthermore,the algorithm’s performance is investigated via a large-scale contact problem,and the maximum speedups of total computational time and contact calculation reach 28.5 and 77.4,respectively,relative to commercial finite element software Abaqus/Explicit running on a single-core central processing unit(CPU).The contact calculation time percentage of the total calculation time is only 18%with the FPM,much smaller than that(50%)with Abaqus/Explicit,demonstrating the efficiency of the proposed method.

摘要： 英语中"许多"的表达法有许多,如many,a great/good many,quite a few,a(large)number of,large numbers of,most,many a,more than one,much,quite a little,a great deal of,a large amount of,a large quantity of和large quantities of。其中有的只能修饰可数名词,有的只能修饰不可数名词,有的既可修饰可数名词,又可以修饰不可数名词。

摘要： A drug dubbed an “imaginary meal in a pill” is being developed by scientists. The pill tricks the body into thinking it has consumed a large amount of calories—as if you have just eaten a substantial meal. The dieter’s dream, it would allow them to continue to enjoy fatty foods without putting on weight. The drug, which tricks the body into believing it has eaten, also cuts cholesterol and keeps blood sugar levels under control.

摘要： 2月底的伦敦正值雨季,却意外天气晴朗。“你赶上了不可多得的好天气!”见面习惯抱怨天气的英国友人不无骄傲地对受邀前来观展的我说道,还不忘揶揄两句."听说上海天天在下雨?"

摘要： In recent years,two significant trends have emerged in global trade.On one hand,based on the unilateral idea that puts their respective national interests first,a few countries have retreated from the position of equal and mutually beneficial trade,even at the cost of fierce trade frictions with other nations.On the other hand,several large economies have adopted a positive attitude toward their free trade strategies and are endeavoring to establish“mega-free trade agreements.”

摘要： 五月份是中考复习的重点攻关阶段。此阶段考生的主要任务是把零碎的要点内容进行分类归纳,织成一张张知识大网,通过研究解题策略,达到举一反三的目的。一、分组归类要点1.单词归类(1)按词义归类。复习单词时,可通过单词的含义进行分类,如复习big时,可以想到反义词small,近义词large(great);复习borrow时,可给出反义词lend;复习he时,可写出对应词she。

摘要： 【classroom management】Richards (1990:10) has the following definition:‘classroom management refers to the ways in which student behaviour,movement and interaction during a lesson are organized and controlled by the teacher.’Various possible organizational structures (e.g.whole class,groups,pairs) have attracted much discussion;see McDonough and Shaw (1993:229) for a useful diagrammatic representation ofthese possible organizational structures.The effect of such structures on interaction patterns has also been the subject of much debate (see Long,1975,for example),while Wright (1987) inter alia views them in terms of a wider socialization process.There is also a large literature on the problem of large classes;see Nolasco and Arthur (1988).

摘要： Objectives: The objectives of this work were to: 1) Calculate the delivery frequency of the large foetus with complications to teenagers;2) Describe the epidemiological profile of these teenagers;3) Identify the risk factors of the large foetus and to establish the maternal prognosis and foetus. Methodology: This was a prospective descriptive 6-month study performed at the Obstetrics and Gynaecology Department of the Donka National Hospital, CHU of Conakry, Guinea. We chose a regular amplitude of one year and we got the following slices: 16 years, 17 years, 18 years. Results: We recorded 14.23% (801/5629) teenage deliveries of which 9.4% (75/801) deliveries are single fat fetus and 93.3% (70/75) of them developed complications. The epidemiological profile was that of an 18 years old teenager (61.4%), single (58.6%), professional (44.3%), out of school (57.1%), primiparous (68.6%), having performed 3 - 4 CPN (47.1%), coming from home (65.7%) and carrying a full term pregnancy (100%) and having delivered by high way medical assistance (52.9%). Risk factors were dominated by the male foetus (75.7%). Maternal morbidity was dominated by cervico-perineal tears 28.6%. The recorded maternal mortality was 4.3%. The 3 cases of maternal deaths were caused by the hemorrhage. The APGAR score at the first minute was in 51.4% between 4 and 6;at the 5th minute in 80% between 7 and 10. The most common foetal complication was acute foetal distress 44.3%. Foetal lethality was 12.8%. Conclusion: Here, we demonstrated the teenage pregnancy and macrosomia in this area. We did not show how we can improve this situation based on the data;however, describing this situation may be of use as a fundamental data to make a better antenatal checkup and teenager-education.

摘要： BACKGROUND Emergency surgical resection is a standard treatment for right-sided malignant colonic obstruction; however, the procedure is associated with high rates of mortality and morbidity. Although a bridge to surgery can be created to obviate the need for emergency surgery, its effects on long-term outcomes and the most practical management strategies for right-sided malignant colonic obstruction remain unclear.AIM To determine the appropriate management approach for right-sided malignant colonic obstruction.METHODS Forty patients with right-sided malignant colonic obstruction who underwent curative resection from January 2007 to April 2017 were included in the study.We compared the perioperative and long-term outcomes of patients who received bridges to surgery established using decompression tubes and those created using self-expandable metallic stents(SEMS). The primary outcome was the overall survival duration(OS) and the secondary endpoints were the diseasefree survival(DFS) duration and the preoperative and postoperative morbidity rates. Analysis was performed on an intention-to-treat basis.RESULTS There were 21 patients in the decompression tube group and 19 in the SEMS group. There were no significant differences in the perioperative morbidity rates of the two groups. The OS rate was significantly higher in the decompression tube group than in the SEMS group(5-year OS rate; decompression tube 79.5%,SEMS 32%, P = 0.043). Multivariate analysis revealed that the bridge to surgery using a decompression tube was significantly associated with the OS(hazard ratio, 17.41; P = 0.004). The 3-year DFS rate was significantly higher in thedecompression tube group than in the SEMS group(68.9% vs 45.9%; log-rank test,P = 0.032). A propensity score–adjusted analysis also demonstrated that the prognosis was significantly better in the decompression tube group than in the SEMS group.CONCLUSION The bridge to surgery using trans-nasal and trans-anal decompression tubes for right-sided malignant colonic obstruction is safe and may improve long-term outcomes.

摘要： 本发明涉及气垫船运动控制领域，具体涉及的是一种基于纵向速度规划的气垫船高速回转控制方法。本发明采用基于侧滑角约束的航速规划方法解决了气垫船采用传统非线性反馈控制在高速回转时的失速问题，能够保证气垫船在回转的同时实现精确的航速跟踪，提高了气垫船的机动性和作业能力，本发明在保证气垫船在高速回转过程中准确跟踪期望艏向的同时避免回转率过大导致的甩尾现象，提高了气垫船在高速回转时的可靠性和安全性。

摘要： 本发明适用于材料技术领域，提供了一种低光泽度聚氯乙烯材料及其制备方法、应用，其中，所述低光泽度聚氯乙烯材料包括以下重量份数的原料：聚氯乙烯树脂80～100份、稳定剂1～10份、增塑剂4～15份、加工助剂0.8～5份、改质剂4～15份、消光剂0～5.5份以及润滑剂0.5～5份。本发明通过稳定剂、增塑剂、加工助剂、改质剂、消光剂以及润滑剂各原料的合理配比，配合特定种类的聚氯乙烯树脂，所得到的低光泽度聚氯乙烯材料，不仅易于加工成型、且具有较为优异力学性能，且低光泽度，耐温以及成本低；另外，通过消光剂的加入可进一步降低材料光泽度的同时，进一步提高本发明聚氯乙烯材料机械力学性能，具有很好的经济效益。

摘要： 本发明涉及光纤耦合技术领域，尤其涉及一种高效率的叠阵型半导体激光器，包括激光源、光束整形组件、会聚透镜、鲍威尔棱镜组件和光纤；所述激光源发出的光束经过光束整形组件进行整形；整形后的光束经会聚透镜会聚，会聚后光束经过鲍威尔棱镜组件进行光束整形可以耦合进光纤的光束。本发明系统结构简单,便于操作,减少了操作步骤,光纤耦合效率达到84.3％。

摘要： 本申请公开了一种变频空调控制方法、装置、电子设备和介质。其中方法包括：获取空调的设置温度值，获取当前室内温度值；根据所述设置温度值、所述当前室内温度值和预设偏差阈值，确定所述变频空调的系统负荷率；获取当前室外温度值，获取所述变频空调的目标器件的信息；依据所述当前室外温度值、所述目标器件的信息以及所述系统负荷率，确认总传热温差；以达到所述总传热温差为目标，对所述变频空调的制冷系统进行控制，可以控制空调系统在不同负荷率下、不同室外温度值下运行在比较高的能效，实现空调系统节能运行。

摘要： 本发明涉及兽医生物技术领域，尤其涉及一种猪轮状病毒重组蛋白以及表达该蛋白的重组腺病毒和应用。所述所述重组蛋白由猪轮状病毒5型VP7蛋白和猪轮状病毒9型VP8蛋白连接组成，具体包括如SEQ ID NO:1所示的氨基酸序列。本发明将猪轮状病毒5型VP7蛋白和猪轮状病毒9型VP8蛋白的编码基因的基因序列构建至腺病毒表达载体中，并进行密码子优化，制备得到针对猪轮状病毒的重组腺病毒，该重组腺病毒表达的目的蛋白的结构和功能与天然状态完全一致，具有较高的安全性和免疫原性。

摘要： 本发明公开了一种改性TPEE电缆料及其制备方法，所述改性TPEE电缆料，按重量份数计，其组分包含改性TPEE100份，阻燃剂50‑100份，阻燃协效剂2‑10份，润滑剂1‑5份，抗氧剂1‑5份，助剂5‑10份。本发明提供的改性TPEE电缆料通过对TPEE接枝功能化石墨烯，以及对阻燃剂氢氧化镁进行改性，使其兼具优异的阻燃性能，力学性能，热老化性能以及加工性能，并且可回收利用，环境友好。

摘要： 本发明公开了一种路线规划方法，包括：获取N个订单的物流信息，所述物流信息包括订单地址，所述订单地址包括第一地址以及第二地址，其中，所述第一地址为目的地在直送范围内的地址，所述第二地址为目的地在直送范围外的地址，N为正整数；筛选出所述订单地址为所述第一地址的M个订单，确定配送M个订单的第一初始路线，对所述第一初始路线进行优化，得到第一优化路线，M为小于等于N的正整数；筛选出所述订单地址为所述第二地址的N‑M个订单，确定配送所述N‑M个订单的第二初始路线，对所述第二初始路线进行优化，得到第二优化路线。

摘要： 本发明公开了一种芳砜纶/四氧化三铁磁性长丝的制备方法，包括如下步骤：四氧化三铁磁性纳米颗粒制备、芳砜纶/四氧化三铁共混纺丝液制备、湿法纺丝，得到具有不同截面形状的磁性长丝。本发明可以实现芳砜纶的连续化湿法纺丝，制备过程温和可控；本发明将四氧化三铁磁性颗粒结合到芳砜纶纤维中，可以实现芳砜纶纤维的功能化，使得芳砜纶纤维具备磁性；本发明采用蛋白模板调控法制备四氧化三铁磁性颗粒，实现四氧化三铁磁性颗粒形貌及尺寸调控，同时使得纳米颗粒在纺丝液中分散均匀性；本发明制备的芳砜纶/四氧化三铁磁性长丝可用于保健、过滤、智能纺织品等领域。

摘要： 本发明属于污水处理技术领域，尤其是涉及一种污水水质预处理快速检测装置，包括检测水箱，检测水箱内壁上固定连接有第一竖板和第二竖板，第一竖板和第二竖板将检测水箱分隔成处理腔室、检测腔室和储存腔室，处理腔室内底壁上固定连接有向下延伸的梯形凸起，且梯形凸起内形成沉淀腔室，梯形凸起的下端固定连接有两根竖直的排污管，检测水箱的侧壁上固定连接有与处理腔室连通的污水进水管。优点在于：本发明可以对不同分层的污水进行水质检测，且多层之间的检测过程均为独立过程，不会出现相互之间的影响，能够对污水进行实时的检测，有助于后续的数据统计，另外采用分级式的检测方式，能够有效的对污水进行全面的检测，提高检测的质量。

摘要： 本发明公开了一种软硬件联合验证系统及方法。该系统包括：驱动软件、基于systemc模拟的存储器和异构集群；驱动软件嵌入在systemc框架中；驱动软件根据预设验证需求向异构集群发送驱动指令；存储器加载并保存待验证数据；异构集群根据驱动指令从存储器中提取待验证数据，计算得到输出数据，发送至驱动软件；驱动软件根据输出数据进行软硬件的联合验证。通过systemc模拟异构集群，驱动软件嵌入systemc框架，为驱动软件提供与硬件功能相等的模型，实现驱动软件对硬件的控制流程，协助软件前期的开发与调试，为硬件提供标准数据。解决了现有技术中软件与硬件在大多数的系统开发中分开进行，导致开发周期长的技术问题。