“Elites”Gathering,Looking Forward to the Future!The Grand Event about the Whole Industry Chain of Surfactant is Encouraging!

Perceive a new tendency,see a new future,take advantage of new technologies and lead a new wave!From Mar.23rd-25th,the“2023 China Surfactant Industry Conference”and“2023 China International Surfactant Industry Expo”were held fervently at Guangzhou Nanfeng Langham Hotel.This grand event was sponsored by China Research Institute of Daily Chemical Industry,undertaken by China Daily Chemical Industry Information Center and Surfactant&Detergent Industry Productivity Promotion Center.

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。

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.

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.

安森美下一代1200 V EliteSiC M3S器件提高电动汽车和能源基础设施应用的能效

全新产品系列包括快速开关MOSFET和半桥功率集成模块,具备领先行业的每开关超低导通电阻Rds(on),采用行业标准封装智能电源和智能感知技术的领导者安森美(onsemi,美国纳斯达克上市代号:ON),推出最新一代1200 V Elite SiC碳化硅(SiC)M3S器件,助力电力电子工程师实现更出色的能效和更低系统成本。全新产品系列包括有助于提高开关速度的Elite SiC MOSFET和模块,以适配越来越多的800 V电动汽车(EV)车载充电器(OBC)和电动汽车直流快充、太阳能方案以及能源储存等能源基础设施应用。

为什么EliteSiC M3S技术是高速开关应用的更优选择?

碳化硅(SiC)具有比硅(Si)更高的介电击穿场强、能带隙和热导率,电力电子设计人员可以利用这些特性来开发比硅基IGBT器件效率更高、功率密度更大的电源转换器。针对这些应用,为了最大限度地减少高频下的导通和开关损耗,需要使用低RDS(on)和低Qrr(体二极管反向恢复电荷)的器件。

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。

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。

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。

Modified Elite Opposition-Based Artificial Hummingbird Algorithm for Designing FOPID Controlled Cruise Control System

Efficient speed controllers for dynamic driving tasks in autonomous vehicles are crucial for ensuring safety and reliability.This study proposes a novel approach for designing a fractional order proportional-integral-derivative(FOPID)controller that utilizes a modified elite opposition-based artificial hummingbird algorithm(m-AHA)for optimal parameter tuning.Our approach outperforms existing optimization techniques on benchmark functions,and we demonstrate its effectiveness in controlling cruise control systems with increased flexibility and precision.Our study contributes to the advancement of autonomous vehicle technology by introducing a novel and efficient method for FOPID controller design that can enhance the driving experience while ensuring safety and reliability.We highlight the significance of our findings by demonstrating how our approach can improve the performance,safety,and reliability of autonomous vehicles.This study’s contributions are particularly relevant in the context of the growing demand for autonomous vehicles and the need for advanced control techniques to ensure their safe operation.Our research provides a promising avenue for further research and development in this area.

Global Warming, Elites and Energy in Latin America： The Chilean Case

Adaptation and mitigation measures and changes in production and consumption patterns are necessary to face the risks of the impacts of global warming. They imply large investments the costs of which companies and governments, in charge of elites are not always willing to endure. Changes in elites have a direct impact on public policy and environmental governance of societies. Are the new elites willing to change traditional patterns of energy consumption if the change could threaten investment and economic growth3 Based on empirical research this paper analyzes the role of elites in a developing Latin American country （the Chilean case） in decisions adopted about the explanations of climate change and specially on the set of measures for adaptation and/or mitigation, focusing on the energy sector of the economy, one of the key sectors directly implied with the possibilities of reducing greenhouse gases emissions.

Stay-Green Panicle Branches Improve Processing Quality of Elite Rice Cultivars

Rice panicle branches are key routes for transportation of photo synthetic products to grains.Branch senescence is an important trait that the breeders considered when breeding elite rice cultivars in South China.However,little is known about the mechanisms underlying the contributions of stay-green panicle branches to rice yield and quality.Here,we reported stay-green branches that continuously maintained transportation function and provided carbohydrates for basal grain development at the late stages of rice development.This ensured the coordination of development between apical and basal grains,and further improved the processing quality of elite rice.These findings provided strategies for improving the fullness and quality of rice grains and presented an important basis for cultivating elite rice.

Creating Prep to Play PRO for women playing elite Australian football:A how-to guide for developing injury-prevention programs

Background:Developing context-specific,evidence-informed,and implementable injury-prevention programs is challenging.Women playing in the elite Australian Football League for Women are at high risk of serious knee injuries,and no specific injury-prevention program exists.The objective of the study was to describe the collaborative process used to create a context-specific injury-prevention program.Methods:A previously used intervention-development process was modified to incorporate a partnership with the sport’s governing organization and focus on engaging program implementers.The Reach Effectiveness Adoption Implementation and Maintenance(RE-AIM)Sports Setting Matrix guided program development and implementation strategies.Results:The 7-step process,aligned with the RE-AIM Sports Setting Matrix,was applied to develop the injury-prevention program and was titled Prep to Play PRO.The steps were:(Step 1)gaining organizational support and establishing a project partnership;(Step 2)using research evidence and clinical experience;(Step 3)consulting content and context experts;(Step 4)engaging the organization,experts,program implementers,and end-users to concreate the intervention and develop implementation strategies;(Step 5)testing the intervention acceptability and feasibility;(Step 6)evaluating the intervention and implementation strategies against theory;and(Step 7)obtaining feedback from early implementers and end-users.Conclusion:Engaging critical stakeholders at multiple ecological levels(organization,team,and athlete)throughout program development and implementation planning support real-world use.The processes and activities described can guide future sports injury-prevention program development and implementation.

U.S.’ Recognition, Evaluation of China-U.S. Educational Cooperation and Its Enlightenment to China--Analysis Based on the Survey Reports by U.S.’Policy Elites

Educational cooperation is one of the key factors to embody humanistic exchanges and promote the development of international relations.Through the analysis of four survey reports on China-U.S.educational cooperation,it is found that American policy elites generally attach importance to the distribution of power,the application of law,mutual benefit between the two countries in educational cooperation,and pay attention to the potential motivation and influence of China.China should rationally refer to the views and suggestions,strengthen the effectiveness of dialogue mechanism,enhance the credibility of international discourse,and at the same time encourage the negotiation and governance among cooperative universities,so as to promote the stable and sustainable development of education cooperation.

Assessing edge-coupled interdependent network disintegration via rank aggregation and elite enumeration

The disintegration of networks is a widely researched topic with significant applications in fields such as counterterrorism and infectious disease control. While the traditional approaches for achieving network disintegration involve identifying critical sets of nodes or edges, limited research has been carried out on edge-based disintegration strategies. We propose a novel algorithm, i.e., a rank aggregation elite enumeration algorithm based on edge-coupled networks(RAEEC),which aims to implement tiling for edge-coupled networks by finding important sets of edges in the network while balancing effectiveness and efficiency. Our algorithm is based on a two-layer edge-coupled network model with one-to-one links, and utilizes three advanced edge importance metrics to rank the edges separately. A comprehensive ranking of edges is obtained using a rank aggregation approach proposed in this study. The top few edges from the ranking set obtained by RAEEC are then used to generate an enumeration set, which is continuously iteratively updated to identify the set of elite attack edges.We conduct extensive experiments on synthetic networks to evaluate the performance of our proposed method, and the results indicate that RAEEC achieves a satisfactory balance between efficiency and effectiveness. Our approach represents a significant contribution to the field of network disintegration, particularly for edge-based strategies.

基于PV Elite软件的塔器校核计算注意事项分析

在对塔式容器进行设计计算时,不仅需要考虑的影响因素繁多,而且其校核计算也较为复杂。对于采用ASME标准规范进行建造的塔式容器,本文介绍了几个在使用PV Elite软件对其进行建模和校核计算时需着重注意和考虑的地方,如合理选择地脚螺栓的计算方法、对塔器进行合理分段建模计算以及考虑轴向应力对于开孔补强的影响等,以便提醒设计人员能够全面考虑计算的正确性和完整性,进而提高塔器操作的稳定性和安全性。

差异教育:撬动拔尖创新人才培养的“阿基米德点”

在新一轮科技革命与产业革命浪潮下,拔尖创新人才在全球竞争格局中发挥着愈加关键的作用,培养拔尖创新人才自然成为世界各国教育的主要任务。拔尖创新人才培养不仅事关国家重大战略方针的贯彻,还是新时代高质量教育体系建设的题中应有之义,更是实现人才全面自由发展的重要抓手。差异教育作为一种承认差异、尊重差异并发展差异的教育模式,分别为拔尖创新人才培养提供了理念、方法与评价上的支撑,是撬动拔尖创新人才培养的“阿基米德点”。具体而言,以“差异育人”为中心的差异教育理念承认并尊重个体具备的不同优势、天赋与潜质,让教育者明白每个学生都可以在自己的创新领域成为“拔尖”人才;以“因材施教”为核心的差异教育方法,打破传统教学“设定标准”和“定向加工”的方法原则,契合了拔尖创新人才的培养模式,让每个学生都能长善救失,获得最佳发展;以“人尽其才”为主的差异教育评价标准,通过“多把尺子”为更多拔尖创新人才提供发展机会,促使拔尖创新人才源源不断地“冒出来”。为此,在拔尖创新人才培养的实践过程中,教育者有必要有机融入差异教育的理念主张,通过树立“尊重差异”的培养理念、创设“发展差异”的培养模式以及探索“多元包容”的评价体系,为拔尖创新人才培养提供差异教育支持。

基于AESL-GA的BN球磨机滚动轴承故障诊断方法

针对基于知识的贝叶斯网络(BN)构建方法存在不完全和不精确的缺点,提出一种基于知识引导和数据挖掘的BN结构构建方法。针对单一信号故障诊断结果不精确的问题和故障信息中存在的不确定性问题,将电流信号与振动信号融合建立BN的特征节点,分别提取2种信号的故障特征参数,利用区分度指标法进行特征筛选,将其作为BN结构特征层的节点。将专家知识构建的初始BN结构结合自适应精英结构遗传算法(AESL-GA)进行结构优化,通过自适应限制进化过程中的搜索空间,减少自由参数的数量,提高其全局搜索能力,得到最优BN结构。通过MQY5585溢流型球磨机滚动轴承实测数据和Paderborn University轴承数据集对所提方法进行验证,结果证明了所提方法的有效性。

自由式滑雪空中技巧运动员孙佳旭股骨头圆韧带撕裂康复训练思路与实践应用

目的:对优秀运动员孙佳旭股骨头圆韧带撕裂的体能康复训练思路、康复方案和评价方式进行研究和总结。方法:采用文献资料调研、专家访谈、测试等研究方法,对受伤运动员进行为期5周的体能康复训练。采用主观评价和客观评估相结合的方式监控康复训练过程。根据阶段性评估结果,制定康复训练3个阶段的训练目标、任务和方案,提高损伤后髋关节灵活度、肌肉力量,缩小左右髋部肌力差异,加强核心区肌群稳定性,发展下肢肌肉力量和落地稳定性。通过髋关节功能性筛查及体能测试,评估受伤运动员能否进行剧烈运动和重返专项运动。结果:康复训练后,髋关节多方向动作疼痛度,下肢肌肉围度,体能测试结果,功能性动作筛查,以及训练量、训练强度、肿胀度和疼痛指数等主观评价结果显著改善。结论:客观评估和主观评价的监控方式,是制定个性化康复训练目标和方案的依据。建议第1阶段采用等长力量训练方式和闭链练习模式,第2阶段逐步增加患侧部位周围肌肉力量训练强度,第3阶段采用专门性体能训练方式最大程度地恢复运动员神经肌肉支配能力,使专项运动能力恢复到伤前水平。

中国高水平运动员心电图异常分析

目的:通过对中国高水平运动员进行心电图检查并诊断,评估性别、运动年限和运动类型对运动员心电图改变的影响。方法:对2016年至2019年进行心电图检查的891名中国高水平运动员的心电图进行检测。根据2010年欧洲心脏病学会指南(ESC)将心电图分为:组0(正常心电图)、组1(常见与训练相关心电图)、组2(不常见与训练不相关心电图)。分析运动员的性别、训练年限(4~6年、7~10年和≥11年)和运动类型(技巧类、力量类、耐力类、混合类)对各组心电图改变的影响。结果:(1)不常见与训练不相关的心电图改变的发生率在不同性别、不同训练年限和不同训练类型的运动员间均不存在显著性差异。(2)常见与训练相关的心电图改变在男运动员中发生率显著高于女运动员(58.9%vs 47.4%);在训练超过11年运动员中发生率最高,与训练4~6年相比具有显著性差异(P<0.05);在不同运动类型间具有显著差异(P<0.01),在混合类中发生率最高,为64.6%;窦性心动过缓在混合类和耐力类运动中的发生率显著高于其他运动类型(P<0.05)。结论:中国高水平运动员与训练相关的心电图改变与性别、训练年限和运动类型均有关。