基于Elitism策略的改进免疫遗传算法求解TSP问题

TSP问题是一类典型的NP完全问题。作者结合Elitism策略提出了一种新的改进免疫遗传算法。该算法既保留了遗传算法的全局随机搜索的优点,又避免了免疫遗传算法的早熟、收敛速度慢等缺点。经仿真实验对比,在求解TSP问题时,该文提出的新算法具有收敛速度快及动态收敛性好的优点。

Central Force Optimization with Gravity <0, Elitism, and Dynamic Threshold Optimization: An Antenna Application, 6-Element Yagi-Uda Arrays

This paper investigates the effect of adding three extensions to Central Force Optimization when it is used as the Global Search and Optimization method for the design and optimization of 6-elementYagi-Uda arrays. Those extensions are Negative Gravity, Elitism, and Dynamic Threshold Optimization. The basic CFO heuristic does not include any of these, but adding them substantially improves the algorithm’s performance. This paper extends the work reported in a previous paper that considered only negative gravity and which showed a significant performance improvement over a range of optimized arrays. Still better results are obtained by adding to the mix Elitism and DTO. An overall improvement in best fitness of 19.16% is achieved by doing so. While the work reported here was limited to the design/optimization of 6- element Yagis, the reasonable inference based on these data is that any antenna design/optimization problem, indeed any Global Search and Optimization problem, antenna or not, utilizing Central Force Optimization as the Global Search and Optimization engine will benefit by including all three extensions, probably substantially.

Decision Making and Ability： An Explanation of Elitism in China＇s Government

This article tries to explain elitism in China＇s governmental decision making. Our model shows that the governments＇ expected utility increases with a bureaucrat＇s ability to make decisions under the flexible framework of delegation and communication （with separated reporting strategy）. In the early of 1950s, China＇s government choose a flexible decision making framework in order to efficiently manage many affairs in a complex environment. This initial choice started the process of a self-reinforcing demand for ability inside of the flexible decision making framework. With the current reforms of streamlining administrations and retreating from the market, the elitism of China＇s government might reverse.

Elite Software-FIRE消防系统水力计算软件介绍及其与国产软件的比较

本文对Elite Software-FIRE软件的使用方法及计算原理进行了介绍,并使用该软件及国产软件对同一个消火栓系统和雨淋系统进行了计算,做了简要对比,对国产软件的发展及国际化之路提出了建议。

Oriented Generation of Novel Thermo-Sensitive Genic Male Sterile Lines with Improved Grain Shape and Outcrossing Rate in Early-Season Rice

Two-line hybrid rice with excellent quality is preferred in the Chinese market.However,there is a trade-off between reducing costs for hybrid seed production and lowering the outcrossing rate of the sterile line,which is largely determined by the stigma exsertion rate(SER).In this study,we constructed mutants of male sterility lines with improved grain length(GL)and SER in three elite early-season indica rice varieties through targeted manipulation of the TMS5 and GS3 genes using CRISPR/Cas9-mediated multiplex systems.We obtained a series of marker-free gs3 single mutants and gs3tms5 double mutants with significantly higher SER,longer grains,and increased 1000-grain weight compared with the wild type(WT).Importantly,the typically thermo-sensitive genic male sterile(TGMS)trait with a higher SER was observed in gs3tms5 mutants,and their F1 hybrids exhibited remarkable improvements in grain shape and yield-related traits.Our findings provided an efficient method to generate new valuable TGMS germplasm with improved SER through the mutagenesis of GS3 and TMS5 synergistically,and demonstrated that GS3 had pleiotropic effects on grain size,SER,and grain quality in early-season indica rice.

World Class Elite Breaststrokers Downward Kick EMG Muscle Activity of the Gluteus Maximus, Quadriceps Femoris, Hamstring, Gastrocnemius Medialis, Rectus Abdominal, and Erector Spinae

This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.

Barriers and Motivators of Young Dutch Elite Athletes for Optimizing Their Nutritional Intake

Many young elite athletes do not meet their daily energy and nutrient requirements. However, little research has been done on why these athletes do not meet their daily needs. The aim was to research the barriers and motivators of young Dutch elite athletes to optimize their nutritional intake. Quantitative and qualitative research was conducted among 8 handball and 4 volleyball players at the Dutch National Sports Center (17.2 ± 0.8 years). First, the nutritional intake was tracked through food diaries and analyzed in Nutritics. Thereupon, five semi-structured interviews based on the COM-B model were carried out. The interviews were transcribed and coded. The athletes had a reduced intake of energy, carbohydrates, vitamins A, C, E, D, calcium, potassium, zinc, and iron compared to their requirements. Seven themes for optimizing their nutritional intake emerged in the interviews: needs assessment, practical translation, portion size, lack of time, involvement, individuality, and food distribution. Barriers that the athletes experienced were that they did not know what their total daily nutritional needs were and how this translates into practice. In addition, the portion size at dinner was too small. They also had little time to eat a full meal due to time pressure from training and school. On the other hand, motivators were receiving meal options to translate their needs into practice with a distribution of moments when they need to eat. Covering these topics in nutritional workshops where athletes actively participate with more individual focus, could contribute to the optimization of their nutritional intake.

New Indonesian Leader Expected To Maintain Friendly China Policy

Indonesian Minister of Defence Prabowo Subianto won Indonesia’s presidential election in February 2024.Prabowo hails from an elite family that has served in many high positions in Indonesia.Having served in important positions in the military for a long time,he is very well connected with military and political circles.

压力容器计算软件SW6与PV Elite开孔补强计算差异比较

通过运行SW6、PV Elite两软件分别计算一压力容器的接管开孔补强来比较两软件计算开孔补强的不同。在相同工况载荷下,通过实例比较,两软件在计算过程中,主要区别为SW6中开孔补强计算是依据于GB/T 150.3.6中计算公式,PV Elite的开孔补强计算则是依据于ASME Ⅷ-1中UG-37中计算公式。通过运行两软件,并结合工程实例,分析GB/T 150与ASMEⅧ-1中径向接管等面积补强计算的差异,为今后的压力容器设计提供参考。

A Research Conception on Indigenous Chinese Leadership:Based on Comparative Case Studies on Political Elites in Ancient China

Due to the complexity of leadership and its variability across situations,it is suggested that research on leadership should focus on attempts to understand leadership in specific situations or roles,and develop local knowledge about leadership in each situation or role.This paper validates the possibility and importance of building indigenous leadership theories from historical perspective.We demonstrated how to carry out research on indigenous Chinese leadership from a historical perspective by comparative case studies using historical data.Based on the principles of typicalness,representativeness,and comparativeness,we selected six counterparts of political elites in ancient China as comparative cases,which includes Guan Zhong&Shang Yang(organizational reformer),Liu Bang&Xiang Yu(entrepreneur),Li Shimin&Qin Shihuang(intergenerational transition successor),Zhuge Liang&Zeng Guofan(professional manager),Lu Su&Zhang Juzheng(mess-to-order maker),and Zuo Zongtang&Wang Anshi(national dream driver).The paper aims to develop indigenous leadership theory specific to Chinese mental states and culture.

PID控制参数优化中的改进免疫遗传算法

针对传统的PID控制起参数优化方法的缺点,提出了一种结合精英策略的改进的人工免疫遗传算法(IGAE),该算法的特点是以新的抗体相似度、期望繁殖率以及克隆选择概率的定义方法和计算公式作为优化问题的目标函数,采用IGAE去调整和优化PID控制器的三个增益参数,结合精英选择策略(elitism strategy)以获得性能最优的PID控制器。仿真实验结果表明新的免疫遗传算法具有全局优化的能力,响应速度快、鲁棒性强,对变参数PID控制的参数优化设计是成功和有效的。

小烧的HiFi进阶之路平衡电源PLiXiR净源ELITE BAC 1500试用报告

HiFi成长之路的又一次体验,这次体验的高端“食材”,由诚意满满的《视听前线》组织,漂流品为PLiXiR净源Elite BAC 1500特别版电源处理器和Elite BAC 3000标准版电源处理器。小弟有幸试用的是Elite BAC 1500特别版,收到产品的一刻有些惊呆,对于电源的理解,我深感自己之前的浅薄。

别把垃圾话带到场下

“tip me clowns”(打赏我啊,小丑们)Elite League精英联赛胜者组首轮第二局比赛,随着XG战队敲出gg,Falcons战队三号位ATF在公屏上打出了这句带有嘲讽意味的话语。

全员一致好评PliXiR电源处理器试用报告分享

“视听漂流活动”是本刊与厂商联合提供足不出户的线下试听活动,旨在让您在家即可享受到品质优秀的视听产品。今年3月,我们携手先声音响有限公司,精心策划了"PliXiR电源处理器漂流活动",为您带来了两款卓越的电源处理器——PLiXiR净源Elite BAC 1500特别版和Elite BAC 3000标准版。

系统脱胎换骨,我沉浸在曼妙的音乐世界中PLiXiR净源Elite BAC 3000电源处理器试用有感

近两年来,随着自己的音响系统趋于稳定、听音取向逐渐明确,我开始关注之前我认为对音质的影响相对“不那么明显”的周边产品,包括电源、线材、机柜和脚架等。其中电源类产品引起了我较大的兴趣。无论从哪种渠道获取的信息,都强调电源对于音响系统的重要性。

Temperature Control of Proton Exchange Membrane Fuel Cell Based on Linear Active Disturbance Rejection Control

The performance of proton exchange membrane fuel cells is very sensitive to temperature. The electrochemical reaction results directly in temperature variations in the proton exchange membrane fuel cell. Ensuring effective temperature control is crucial to ensure fuel cell reliability and durability. This paper uses active disturbance rejection control in the thermal management system to maintain the operating temperature and the stack inlet and outlet temperature difference at the set value. First, key cooling system modules such as expansion tanks, coolant circulation pumps and radiators based on Simulink were built. Then, physical modeling and simulation of the fuel cell cooling system was carried out. In order to ensure the effectiveness of the control strategy and reduce the parameter tuning workload, an active disturbance rejection control parameter optimization method using an elite genetic algorithm was proposed. When the optimized control strategy responds to input disturbances, the maximum overshoot of the system is only 1.23% and can reach stability again in 30 s, so the fuel cell temperature can be controlled effectively. Simulation results show that the optimized control strategy can effectively control the stack temperature and coolant temperature difference under the influence of stepped charging current without interference or with interference, and has strong robustness and anti-interference capability.

基于改进的遗传算法神经网络控制器

基于遗传算法的神经网络控制器,对神经网络中连接权值采用实值编码,通过随机选择,可变变异率和Elitism方法形成改进遗传算法。以倒立摆系统神经网络控制器参数寻优为例,对二进制编码和实值编码的遗传算法进化过程进行仿真,结果表明本算法寻优效果优,在多参数、多目标、多约束条件下,寻优效果更佳。

Von Clauss法与PT衍生法测定纤维蛋白原在全自动血凝仪的应用比较

目的:比较ACL ELITE PRO全自动血凝分析仪上Von Clauss法与PT衍生法(PT-der法)测定纤维蛋白原(FIB)的准确性及其临床应用价值。方法:用Von Clauss法与PT衍生法分别对新鲜混合血浆,20份正常质控品,301例临床样本和15例D-D二聚体阳性标本进行检测。结果:两种方法测定FIB的重复性良好;对20份正常质控品的测定结果差异无统计学意义(P>0.05);对临床样本按PT-der法检测结果分阶段做分析,FIB在1.51～3.50 g/L时,两种方法测定结果相近,差异无统计学意义(P>0.05),FIB>3.50 g/L时,PT-der法结果偏高,差异有统计学意义(P<0.05);15例D-D二聚体阳性标本用PT-der法测定结果明显高于Von Clauss法,差异有统计学意义(P<0.05)。结论:在ACLELITE PRO全自动血凝分析仪上,当PT-der法测出的FIB值在1.51～3.50 g/L时,直接报告结果,当PT-der法测出的FIB值>3.50 g/L时,以Von Clauss法复查的结果发出报告,两者结合应用可确保工作质量,提高实际工作效益。

Philips Brilliance iCT Elite冠状动脉CTA低剂量扫描的研究与探讨

目的 :评价冠状动脉CT血管成像(CT angiography,CTA)低剂量扫描结合i Dose重建与常规剂量扫描结合滤波反投影(filtered back-projection,FBP)重建图像的图像质量,探讨Philips Brilliance i CT Elite冠状动脉成像中降低k Vp对减低辐射剂量的影响程度。方法:筛选73例行门控轴位扫描的患者,分为A、B、C、D 4组。其中A组采用常规剂量120 k Vp,B、C、D组均采用100 k Vp,应用软件i Dose4分别降噪,观察降低剂量的效果。结果 :应用Philips Brilliance i CT Elite的i Dose4迭代重建可以显著改善图像的质量,在CT剂量指数(CT dose index,CTDI)较常规剂量降低50%的条件下仍可以得到与常规剂量FBP重建相当甚至更好的图像,在非选择性人群中,其冠状动脉CTA辐射剂量降至55%是可行的。结论 :通过降低k Vp可以显著降低冠状动脉成像扫描的辐射剂量。

ELITE PRO血凝仪2种测定纤维蛋白原方法结果的比较

目的:研究贝克曼库尔特ACL ELITE PRO全自动血凝仪,简称ELITE PRO。用凝血酶原时间(Prothrombin time,PT)衍算法(PT-Fib)测定纤维蛋白原(Fibrinogen,Fib)含量的精密度及其与凝血酶法(Clauss法)检测结果的相关性。方法:用Clauss法及PT-Fib法同时测定232例标本的Fib含量,对其结果的相关性进行分析,得出PT-Fib法测定Fib在ELITE PRO上的可信范围。结果:PT-Fib法检测结果精密度高,当Fib含量在1.5～4.5 g/L时,PT-Fib法与Clauss法的结果接近,两者测定结果正相关;当Fib<1.5 g/L或>4.5 g/L时,PT-Fib法的结果高于Clauss法。结论:当PT-Fib法测定的Fib含量在1.5～4.5 g/L时结果可靠,可直接用于临床报告;当PT-Fib法测定的Fib结果<1.5 g/L或>4.5 g/L时结果不稳定,应用Clauss法进一步复查。2种方法结合使用既可保证Fib检测速度的迅速、结果的准确,也可达到节约试剂的目的。