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Stability condition of FAST TCP in high speed network on the basis of control theory

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Journal of Systems Engineering and Electronics 2008年第4期19卷 843-850页

作者： Zhao Fuzhe zhou jianzhong Luo Zhimeng Xiao Yang Digital Engineering Research and Simulation Center Huazhong Univ. of Science and Technology Wuhan 430074 P. R. China Dept. of Computer Science Univ. of Alabama USA

Considering the instability of data transferred existing in high speed network, a new method is proposed for improving the stability using control theory. Under this method, the mathematical model of such a network is established. Stability condition is derived from the mathematical model. Several simulation experiments are performed. The results show that the method can increase the stability of data transferred in terms of the congestion window, queue size, and sending rate of the source.

关键词： control theory congestion control stability condition FAST TCP

Improving Tribological Performance of Gray Cast Iron by Laser Peening in Dynamic Strain Aging Temperature Regime

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Chinese Journal of Mechanical Engineering 2015年第5期28卷 904-910页

作者： FENG Xu zhou jianzhong MEI Yufen HUANG Shu SHENG Jie ZHU Weili School of Mechanical Engineering Jiangsu University

A high and stable brake disc friction coefficient is needed for automobile safety, while the coefficient degrades due to elevated temperature during the braking process. There is no better solution except changes in material composition and shape design optimization. In the dynamic strain aging（DSA） temperature regime of gray cast iron, micro-dimples with different dimple depth over diameter and surface area density are fabricated on the material surface by laser peening（LP） which is an LST method. Friction behavior and wear mechanism are investigated to evaluate the effects of surface texturing on the tribological performance of specimens under dry conditions. Through LP impacts assisted by DSA, the friction coefficients of the LPed specimens increase noticeably both at room temperature and elevated temperature in comparison to untreated specimens. Moreover, the coefficient of specimen with dimple depth over diameter of 0.03 and surface area density of 30% is up to 0.351 at room temperature, which dramatically rises up to 1.33 times that of untextured specimen and the value is still up to 0.3305 at 400℃ with an increasing ratio of 35% compared to that of untreated specimen. The surface of textured specimen shows better wear resistance compared to untreated specimen. Wear mechanism includes adhesive wear, abrasive wear and oxidation wear. It is demonstrated that LP assisted by DSA can substantially improve wear resistance, raise the friction coefficient as well as its stability of gray cast iron under elevated temperatures. Heat fade and premature wear can be effectively relieved by this surface modification method.

关键词： laser peening micro-dimples dynamic strain aging friction coefficient

Assessing Danger Degree of Soil Erosion in Rikaze Prefecture,Tibet

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 705-709页

作者： CHEN Xuehua zhou jianzhong zhou Hongyi School of Hydropower and Information Engineering Huazhong University of Science and Technology Wuhan 430074 Hubei China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China

Ten indicators were selected in the present paper concerns current status of soil erosion and its driving forces. Synthesized evaluation model on danger degree of soil erosion （DDSE） was built and estimation on DDSE in Rikaze was carried out by analytical hierarchy process （AHP）. This evaluation model selected indicators scientifically and reasonably, which are easy to be caught, and played well in application. Results showed that a light erosion danger degree exists in Nanmulin, Xietongmen and Angren; Dingri, Sajia, Saga, Zhongba; Nielamu, Gangba, Kangma and Rikaze County share a moderate danger degree, while other counties own severe erosion, especially Dingjie and Lazi County. Ecological environment in Rikaze is frangible. Therefore, eco-restoration needed in this and corresponding c region to guarantee are urgently a regional eco-environment healthy.

关键词： soil erosion danger degree indicator system analytical hierarchy process Rikaze

Biotransformation of soy whey into a novel functional beverage by Cordyceps militaris SN-18

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Food Production, Processing and Nutrition 2021年第1期3卷 125-135页

作者： Yiqiang Dai jianzhong zhou Lixia Wang Mingsheng Dong Xiudong Xia Institute of Agricultural Product Processing Jiangsu Academy of Agricultural SciencesNanjing 210014People’s Republic of China College of Food Science and Technology Nanjing Agricultural University1 Weigang RoadNanjing 210095People’s Republic of China School of Food and Biological Engineering Jiangsu University301 Xuefu RoadZhenjiangJiangsu 212013People’s Republic of China

Soy whey,a liquid nutritional by-product of soybean manufacture,is rich in proteins,oligosaccharides and *** whey can be used to produce functional beverages,instead of discarding it as a *** this study,unfermented soy whey(USW)and Cordyceps militaris SN-18-fermented soy whey(FSW)were investigated and compared for their physicochemical and functional properties by high performance liquid chromatography(HPLC)and DNA damage *** show that *** SN-18 fermentation could increase the contents of essential amino acids,total phenolic and flavonoid and isoflavone aglycones and eliminate the oligosaccharides in soy ***,*** SN-18 could significantly enhance the ABTS radical scavenging ability,reducing power and ferric reducing power of soy whey,and its fermented products could prominently attenuate Fenton reaction-induced DNA *** findings indicate that soy whey can potentially be converted into a novel soy functional beverage by *** SN-18 fermentation.

关键词： Soy whey Cordyceps militaris Fermentation Antioxidant capacity DNA damage protection

Effects of Jisuikang on hemorheology and inflammatory factors in rats following spinal cord injury

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Neural Regeneration Research 2008年第11期3卷 1176-1180页

作者： Yong Ma jianzhong zhou Wengui Yang Wenjian Sun Shaojian Yin Shijie Sun Research Institute of Orthopedics First Clinical Medical College Nanjing University of Traditional Chinese Medicine Nanjing 210029 Jiangsu Province China Nanjing University of Traditional Chinese Medicine Nanjing 210029 Jiangsu Province China Shanghai Meishan Hospital Nanjing 210030 Jiangsu Province China

BACKGROUND： Trauma can damage the spinal cord or cauda equina to different degrees. Previous studies have verified that traditional Chinese medicine has effects on spinal cord injury via a variety of pathways. OBJECTIVE： To observe changes in hemorheology and inflammatory factors in spinal cord injury rats following treatment with the Chinese medicine Jisuikang, to verify the dose-dependent effect of Jisuikang, and to compare its effects with the effects of prednisone. DESIGN, TIME AND SETTING： A randomized study was performed at the Research Institute of Orthopedics, and Experimental Center of First Clinical Medical College, Nanjing University of Traditional Chinese Medicine, China from September 2007 to March 2008. MATERIALS： Jisuikang powdered extract, composed of milkvetch root （30 g）, Chinese angelica （12 g）, red peony root （12 g）, earthworm （10 g）, szechwan lovage rhizome （10 g）, peach seed （10 g） and safflower （10 g） was provided by the Experimental Center, First Clinical Medical College, Nanjing University of Traditional Chinese medicine. Each gram of powdered extract was equivalent to 6.47 g crude drug. METHODS： A total of 72 Sprague Dawley rats were randomly assigned into 6 groups （n = 12）. Rat models of spinal cord injury were established using the occlusion method. Rats in the model group were treated with distilled water. Rats in the 25 g/kg, 12.5 g/kg, and 6.25 g/kg Jisuikang groups were given 25 g＆g, 12.5 g/kg, or 6.25 g/kg Jisuikang by gavage, for 14 days. Rats in the prednisone group received 0.06 g/kg prednisone by gavage, for 7 days. Rats in the normal group were given the same volume of distilled water. The volume of administration was 15 mL/kg. MAIN OUTCOME MEASURES： Rat serum interleukin-10, tumor necrosis factor- α （TNF-α ）, nitric oxide, nitric oxide synthase levels, malondialdehyde content, superoxide dismutase activity and whole blood viscosity were measured in each group. Spinal cord around the site of the model was collected. Half the spi

关键词： spinal cord injury traditional Chinese medicine neural regeneration

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套管弹簧减振器控制的林木减振风洞试验

农业工程学报 2012年第1期28卷 72-77页

作者：周建中北京林业大学水土保持学院教育部水土保持与荒漠化防治重点实验室北京100083

为了减轻林木的风致振动灾害,该文基于减振控制理论研制了4个套管弹簧减振器,并分别对4株新疆杨试件实施风致减振控制。在自制的简易风洞中模拟自然风环境,进行有、无减振器作用的减振对比试验,得到了风致动态应变、风致动态位移、风致... 详细信息

为了减轻林木的风致振动灾害,该文基于减振控制理论研制了4个套管弹簧减振器,并分别对4株新疆杨试件实施风致减振控制。在自制的简易风洞中模拟自然风环境,进行有、无减振器作用的减振对比试验,得到了风致动态应变、风致动态位移、风致动态速度及风致动态加速度响应特征对比曲线。结果表明:在林木上粘贴的电阻应变计及装设的电荷加速度计能够测得林木的风致动态响应;在林木上安装该文研发的套管弹簧减振器能有效降低林木的应变、位移、速度及加速度等风致动态响应峰值,并能很好地对林木实施风振控制。该文研发的套管弹簧减振器构造相对简单,造价低廉,耐候性好,适合大面积推广,尤其适合立地条件困难地区的林木风灾保护。应用该文研发的套管弹簧减振器对林木风灾实施保护,开辟了林木风灾保护的一条新途径。

关键词：风洞减振器林木套管弹簧减振器林木减振控制风致动态响应

Unclear but present danger:An asymptomatic SARS-CoV-2 carrier

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Genes & Diseases 2020年第4期7卷 558-566页

作者： Xuejing Yu Dongchuan Ran Jinhui Wang Yuan Qin Ruishan Liu Xueli Shi Yiping Wang Chang Xie Jia Jiang jianzhong zhou University of Utah School of Medicine Cardiothoracic Surgery Department15 N.Medical Drive Room 552084112-5650Salt Lake CityUTUSA Chongqing University Three Gorges Hospital #165 Xincheng RoadWanzhou DistrictChongqing404000China The First Affiliated Hospital of Chongqing Medical University #1 Yuanjiagang Youyi RoadYuzhong DistrictChongqing400016China

Superspreaders are critical infectious resources in multiple infectious *** can be asymptomatic or present mild symptoms but can transmit pathogens to susceptible populations,leading to severe symptoms,and even *** identification of this population is extremely important to inhibit the spread of infectious *** now,the whole global world is suffering from a devastating infectious disease caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).In this article,a superspreader cluster event in coronavirus disease 2019(COVID-19)was identified by tracking contacting histories of infected *** cluster was found to be originated from an asymptomatic SARS-CoV-2 carrier,which resulted in 13 secondary cases getting *** the secondary patients presented with non-typical symptoms of COVID-19,such as fever,dry cough,and myalgia,one of which died of respiratory failure at the *** this cluster,we learn that people with older ages,low immunity,multiple underlying diseases,especially pulmonary diseases,can contribute to a poor ***,asymptomatic superspreaders of COVID-19 can be extremely dangerous and must be handled time-efficiently.

关键词： Asymptomatic Coronavirus COVID-19 SARS-CoV-2 Superspreader

International Expert Diagnostic Assessment for CAS Institutes

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Bulletin of the Chinese Academy of Sciences 2015年第1期29卷 39-40页

作者： DAI Tao zhou jianzhong LI Xiaoxuan Institute of Policy and Management Chinese Academy of Sciences Research Center for Management Innovation and Evaluation Chinese Academy of Sciences

Since 2011,the Chinese Academy of Sciences(CAS)has entered the new development stage of'Innovation2020'.The management of CAS towards its affiliated research institutes has also diverted to major outcomeoriented strategy,focusing on their un-substitutability in a research *** requires its research institutes to pinpoint their'One Positioning,Three Major Breakthroughs,Five Key Potential Directions'。

关键词：中科院专家诊断研究所评估国际研究机构可替代性科研院所

Hydrological Mann-Kendal Multivariate Trends Analysis in the Upper Yangtze River Basin

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Journal of Geoscience and Environment Protection 2015年第10期3卷 34-39页

作者： Lei Ye jianzhong zhou Xiaofan Zeng Muhammad Tayyab College of Hydropower and Information Engineering Huazhong University of Science and Technology Wuhan China Hubei Key Laboratory of Digital Valley Science and Technology Huazhong University of Science and Technology Wuhan China

Hydrological events should be described through several correlated variables, so multivariate HFA has gained popularity and become an active research field during recent years. However, at present multivariate HFA mainly focuses directly on fitting the frequency distribution without confirming whether the assumptions are satisfied. Neglecting testing these assumptions could get severely wrong frequency distribution. This paper uses multivariate Mann-Kendal testing to detect the multivariate trends of annual flood peak and annual maximum 15 day volume for four control hydrological stations in the?Upper Yangtze River Basin. Results indicate that multivariate test could detect the trends of joint variables, whereas univariate tests can only detect the univariate trends. Therefore, it is recommended to jointly apply univariate and multivariate trend tests to capture all the existing trends.

关键词： Trend Analysis Multivariate Mann-Kendal Test Hydrological Variable Upper Yangtze River Basin