NECESSARY AND SUFFICIENT CONDITION OF THE STRONG CONVERGENCE FOR TWO FINITE FAMILIES OF UNIFORMLY L-LIPSCHITZIAN MAPPINGS

The purpose of this paper is to study necessary and su？cient condition for the strong convergence of a new parallel iterative algorithm with errors for two finite families of uniformly L-Lipschitzian mappings in Banach spaces. The results presented in this paper improve and extend the recent ones announced by [2–7].

基于多策略的CDN加速域名识别与分析研究

CDN加速机制可以提升网站访问速度,隐藏主服务器真实IP地址。针对CDN加速域名真实IP地址难以获取的问题,提出一种基于多策略的CDN加速域名识别与分析方法。通过多地ping指令查询、综合站点查询、DNS历史记录查询等多种策略,借助互联网公开平台查询源站点真实IP地址。对已停用的域名,通过子域名、兄弟域名历史记录查询,尝试获取源站点IP地址。提出的多策略CDN加速域名识别与分析方法均通过互联网公开平台完成查询。实际测试表明,该方法可较好地应用于CDN加速域名的识别与分析。

基于ping命令在网络质量监测中的应用研究

在当今的互联网世界中,网络是通信和信息交换的基础,网络质量监测对于网络运维至关重要。利用互联网控制消息(ICMP)协议中的ping命令来测试网络可达性和网络延迟,通过ping命令可以有效地监测网络质量。研究探讨了ping命令在网络质量监测系统中的应用,讨论了其原理、方法,并在校园网络维护中进行实际应用。通过系统的设计与实现,验证了ping命令在监测网络质量、网络延迟和评估数据包丢失方面的有效性,讨论了ping命令的局限性和挑战,并提出了增强其在网络质量监测中的实用性的策略。

Chinese Wisdom on Water Governance

Water Governance in China-Perspectives of Xi Jinping Author:Ministry of Water Resources Hardcover,512 pages Published by Foreign Languages Press Water has a vital symbolic significance in Chinese culture.Over 2,000 years ago,Lao Zi,the philosopher and founder of Taoism in the late Spring and Autumn Period(770-476 BC),noted,“The greatest virtue is like water,nurturing all living things without competing with them,”conveying the idea that true virtue,like flowing water,benefits all.

Vice-President Ai Ping Meets Secretary-General Saqib of India China Economic and Cultural Council

On March 26th,CAFIU Vice-President Ai Ping met Secretary-General Mohammed Saqib of the India China Economic and Cultural Council.The two sides exchanged views on China-lndia relations and people-to-people exchanges.Vice-President Ai Ping said that the development of relationship between two states is based on their peoples.Strengthening people-to-people exchanges between China and India and promoting mutual understanding between the peoples are important for the improvement of the relationship between the two countries.

NAVIGATING CHALLENGES TOGETHER 3rd AIWW calls for regional and global collaboration in the field of water resources

The 3rd Asia International Water Week (AIWW),themed"Enhancing Our Future Water Security,"concluded in Beijing on September 26.Delegates from the many Asian countries attending the event widelyrecognized the water governance philosophy proposed by Chinese President Xi Jinping:"prioritizing water conservation,balancing water distribution in time and space,and taking a systematic approach to water management with the synergy of government and market."

Vice-President Ai Ping Meets the US Word4Asia Delegation in Beijing

On March 21st,Mr.Ai Ping,Vice-President of CAFIU,met in Bejing with a 6-member delegation from the US Word4Asia led by Dr.Gene Wood,Chief Executive Officer of Word4Asia.Mme.Xiao Ningning,Deputy Secretary-General of China NGO Network for International Exchanges,Mr.Gu Chuanyong,Vice-Chair of Board of the Amity Foundation,and Mme.She Hongyu,Deputy Secretary-General of the Amity Foundation,attended the meeting.The two sides exchanged views on deepening people-to-people exchanges and cooperation between China and the United States and on the preparation of the 5th"Amity Cup"International Table Tennis Charity Competition.

The Translation of Slangs in Two English Versions of Jin Ping Mei

The Chinese classical novel Jin Ping Mei abounds with a large number of slangs,which correspondingly leads to the difficulty of the novel’s English translation and also gives rise to the emergence of diversified English versions.The two English translators,Clement Egerton and David Roy,adopted completely different translation strategies when dealing with Chinese slangs in the novel.Their different translation purposes account for the significant disparity concerning the slang translation.Clement Egerton pays more attention to the novel’s plot in his English version The Golden Lotus,rather than the unique expressions of the original language,so that in the concrete translation process,a domestication strategy is adopted for the sake of the target language readers’understanding,resulting in distortion and omission of the slang expressions in the translated text.By contrast,the translation purpose which guides David Roy’translation The Plum in the Golden Vase is to convey the complexity and literariness of the original Chinese text,and hence the foreignization strategy is employed concerning slang translation,which aims to accurately reproduce the unique expressions of slangs in the original text.Comparatively speaking,David Roy’s translation succeeds in preserving the Chinese slangs to the greatest extent both in form and meaning,and can shed light for the slang translation in other Chinese literary works.

Thoughts for a New Era

The 28th Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change was held in Dubai,the United Arab Emirates,from 30 November to 12 December 2023.Climate change is a common challenge facing the world.China has always attached great importance to tackling climate change and adheres to the path of high-quality,environmentally prioritised and lowcarbon development.Following are edited excerpts of Chinese President Xi Jinping’s speeches on tackling climate change since 2020.

THOUGHTS FOR A NEW ERA

China celebrates its National Security Education Day on 15 April.This year marks the 10th anniversary of the holistic approach to national security put forward by Chinese President Xi Jinping.Guided by the approach,China has navigated drastic changes in the international landscape and kept itself well positioned in the pursuit of development and security.Xi has reiterated the importance of national security on many occasions.Edited excerpts of his speeches on this topic since 2016 follow.

网络状态自动检测工具的设计与实现

为了加强网络的日常管理,实现自动化断网线路预警,介绍了一款多线路网络状态自动监测工具。特点是按照指定的IP范围循环进行监控扫描,当网络中某个节点的线路出现中断时,自动进行语言播报,同时将中断的预警信息发送给网管人员,网管人员根据预警信息进行快速定位并维修,弥补了传统网络管理工具的不足,方便了网络运维人员的工作,降低了日常工作压力。

计算机局域网故障检测与维修技术探究

文章以提升计算机局域网检测与检修水平为目标,从事计算机局域网故障检测与维修技术分析。在围绕ping工具、测试TCP/IP协议配置工具探讨如何基于系统内置网络测试工具实现故障检测后,陆续开展网卡驱动、代理服务器、病毒问题等各种故障的维修策略研究,并提出计算机局域网故障维修注意事项。仅以本文,供我国计算机使用者、企业IT部门借鉴与参考。

大菱鲆产卵季节对卵子的生物学及生化特征的影响

于 2 0 0 0年 6— 8月 ,采用现场测定和生化分析方法 ,研究了大菱鲆雌鱼产卵盛期和产卵晚期卵子的生物学特征及生化组成。结果表明 ,大菱鲆卵子的生物学特征及生化组成随着产卵季节的进程而改变。产卵晚期的卵子卵径小于产卵盛期 ,每粒卵子含水量及重量均高于晚期 ,盛期卵子的粗蛋白、脂肪、灰分占干重的百分比低于晚期卵子。在产卵晚期 ,中性脂所占比率略有增加 ,磷脂所占比率略有下降。产卵晚期的脂肪酸 1 8∶ 3 (n- 3 )、2 2∶ 4(n- 6 )水平比产卵盛期有明显增加 ,而 2 0∶ 5 (n- 3 )、2 0∶ 4(n- 6 )、2 2∶ 5 (n- 3 )和 2 2∶ 6 (n- 3 )的水平则明显下降。

饲料中主要能量物质对大菱鲆幼鱼生长的影响

于 1 999年 6— 8月 ,采用正交设计统计方法 ,对主要能量物质蛋白质、脂肪和糖类对大菱鲆幼鱼生长的影响进行研究。利用L16 ( 4 3)正交设计了 1 6组大菱鲆幼鱼饲料 ,在各组饲料中 ,蛋白质、脂肪和糖类的含量范围分别为 36%— 45 %、8%— 2 0 %和 0 %— 6% ,共进行了60d的喂养实验 ,并对饲料及鱼体成分进行分析测定。结果表明 ,各主要能量物质对鱼体增重和配合饲料转化率的影响顺序为蛋白质 >糖类 >脂肪 ,且蛋白质的变化对增重率的影响极显著 。

山东近海褐牙鲆自然与养殖群体生化遗传结构及其遗传变异的比较分析

山东近海褐牙鲆自然群体活样本共 79尾 ,分别于 1 996年 5月、1 997年 1月和 1 998年 4月采自青岛近海 ;养殖群体活样本 5 2尾于 1 997年 1 2月采自山东荣成寻山养鱼场。采用水平淀粉胶和垂直聚丙烯酰胺凝胶电泳方法及 3种缓冲系统 (TC、EBT和TG)分别对自然和养殖群体的 1 5种同工酶进行生化遗传分析。结果表明 ,山东近海牙鲆自然群体的多态基因座位比例 ( 31 .0 % )和群体平均杂合度 ( 0 .0 80 2 )都明显高于养殖群体 ( 2 4 .1 % ,0 .0 788) ;在自然群体的 9个多态基因座位、养殖群体的 7个多态基因座位中 ,除了Cat(P <0 .0 5 )和Idhp - 1(P <0 .0 5 ,养殖群体中 )有显著差异、Ldh -C(P <0 .0 1 )完全偏离Hardy -Weinberg定律外 。

中国莱姆病螺旋体宿主动物的初步调查研究

为对中国莱姆病螺旋体的宿主动物有所了解，于１９８７～１９９７年间，作者在中国１６个省（市、区）的山林地区，采用血清流行病学和病原学研究方法，对牛、羊、狗、野兔和野鼠进行了莱姆病的调查研究。结果显示在我国至少有牛、羊、狗、野鼠、野兔等５种动物中有莱姆病的感染存在。牛、羊和狗的感染率分别为１８．１８％～３２．６１％、１７．１２％～６１．２１％和３８．５０％～６０．００％。狗作为我国北方林区莱姆病螺旋体的主要生物媒介全沟硬蜱成虫的主要供血者之一，可能是较重要的宿主动物。从黑线姬鼠、棕背、花鼠、白腹鼠、社鼠、褐家鼠、针毛鼠、白腹巨鼠和华南兔等动物分离出２０株莱姆病螺旋体，尤其是从黑线姬鼠和白腹巨鼠的胎鼠分离到莱姆鼠病螺旋体，证实莱姆病螺旋体可通过胎盘垂直传播，这对莱姆病自然疫源地的维持和扩大有重要意义。野鼠的感染率在４１．１８％～８６．０５％间。血清学和病原学调查结果证实黑线姬鼠和棕背是中国莱姆病螺旋体的重要储存宿主。

人工诱导雌核发育牙鲆的染色体及核型证明

于1994-1996年，分别在威海海洋渔业捕捞公司（石岛）和鸿洋实业总公司龙须岛育苗场采集人工培育的3－5龄牙鲆亲鱼，采用紫外线照射法使牙鲆精子遗传物质失活，并用冷休克法抑制受精卵第二极体释放，从而获得雌核发育二倍体牙好。原肠期采用空气干燥法、Giemsa染色，得到雌核发育二倍体、正常二倍体及单倍体的染色体制片，进行染色体和核型的分析。结果表明，牙鲆的雌核发育二倍体和正常二倍体的染色体数均为2n=48，核型为48t，即48条端部着色点染色体，臂数NF=48，两者的核型设有明显差异；单倍体为24条端部着丝点染色体；在3个组别中，第一号染色体上都有一明显的次缢痕。雌核发育二倍体牙鲆的诱导率为98％。

重金属对牙鲆胚胎和仔鱼的影响

鱼类早期发育阶段胚胎和仔鱼是整个生活史中对各种污染物最为敏感的阶段,因而许多学者强调在水质评价中利用鱼类早期发育阶段进行毒性试验的重要性。牙鲆(Paralichthys olivaceus)是我国近海重要的经济鱼类,在一些地方已开展人工养殖研究,而且对该种鱼类的早期发育过程及形态特征已有较详细的研究报道。本文利用牙鲆的受精卵进行重金属Cu,Zn,Cd,Pb和Cr对胚胎和仔鱼影响的试验研究,为海产资源的保护和环境管理提供科学依据。

雌核发育牙鲆同工酶基因的重组及父方基因的表达

于 1 998年 4、5月在山东省荣成市寻山水产公司养鱼场人工采集牙鲆成熟精卵 ,紫外线灭活精子遗传物质 ,冷休克诱导 ,获得雌核发育牙鲆。 1 999年 5月收集 5 7尾雌核发育牙鲆生化样品 ,采用淀粉胶电泳分析了 LDH、IDHP、PGM、ACP、ADH、SDH、GDH、CAT等 8种在野生种群中为多态的同工酶。结果表明 ,牙鲆雌核发育群体的 Ldh- C、Cat两个基因座位发生了重组 ,基因座位与着丝点之间的重组率分别为 5 2 .6 %和 2 9.8% ;Idhp- 1有父方基因表达现象 ,说明雌核发育过程中父方基因可能在分子水平整合 ;牙鲆雌核发育群体的多态座位比例和平均杂合度分别为 7.0 %和 0 .0 3 5 ,远低于野生种群 ;研究表明 ,通过抑制第二极体排出获得的牙鲆雌核发育子代尚有一定基因杂合 。

牙鲆自净式养殖槽中异养细菌和硝化细菌数量及硝化速率

:对牙鲆 (Paralichthysolivaceus)自净式养殖槽水层和过滤沙层的异养细菌和硝化细菌数量及硝化速率进行了研究 ,测得装有循环过滤装置的水槽水中和沙粒上异养细菌平均数量分别为 2 .32× 10 4 CFU /ml和 2 .89× 10 6 CFU/ml(湿沙 ) ,亚硝酸细菌分别为 3.0× 10 2 ml- 1和 2 .0× 10 4 ml- 1(湿沙 ) ,硝酸细菌分别为2 .0× 10ml- 1和 3.0× 10 3ml- 1(湿沙 )。水和沙粒的氨氧化速率平均分别为 0 .0 32mg/ (L·d)和 7.59mg/ (L·d) (湿沙 ) ,亚硝酸氧化速率分别为 0 .2 59和 2 8.0mg/ (L·d)。无循环过滤装置的水槽水中异养细菌、亚硝酸细菌和硝酸细菌平均数量分别为 1.38× 10 6 CFU/ml、3.5× 10 3和 3.5× 10 3ml- 1,氨和亚硝酸氧化速率分别为 0 .712和 1.56mg/ (L·d)。