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A New ID-Based Proxy Multi-Signature Scheme from Bilinear Pairings

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 193-197页

作者： GU Chun-xiang PAN Heng zhu Yue-fei Network Engineering Department Information Engineering University Zhengzhou 450002 Henan China

ID-based public key cryptosystem can be a good alternative for certifieate-based public key setting. This paper provides an efficient ID-based proxy multi signature scheme from pairings. In the random oracle model, we prove that our new scheme is secure against existential delegation forgery with the assumption that Hess＇s scheme-1 is existential unforgeable, and that our new scheme is secure against existential proxy multi-signature forgery under the hardness assumption of the computational Diffie-Hellman problem.

关键词： ID-based signatures proxy multi-signature ID-based proxy multi signatures bilinear pairlngs provable security

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重庆武隆地区地震尾波Q_(C)值特征

四川地震 2024年第1期 1-6,12页

作者：汪建杨亚运魏红梅朱祥张涛重庆市地震局重庆401147

为了了解重庆武隆地区地下介质的物性特征,为预测强地面运动和评估地震灾害损失提供一定的参考。本文选取2012年1月至2022年12月重庆地震台网记录的武隆地区56次M_(L)≥2.0地震波形资料,采用Sato单次散射模型分别计算了5个台站记录的尾... 详细信息

为了了解重庆武隆地区地下介质的物性特征,为预测强地面运动和评估地震灾害损失提供一定的参考。本文选取2012年1月至2022年12月重庆地震台网记录的武隆地区56次M_(L)≥2.0地震波形资料,采用Sato单次散射模型分别计算了5个台站记录的尾波衰减参数,拟合得到武隆地区地震尾波Q_(C)值与频率(f)的依赖关系为Q_(C)(f)=41.87±8.69f^(0.9568±0.0904),表明该地区为低Q_(0)值(f=1)和较高频率依赖性(η)的构造活跃区。本文还分析了整个地震序列的尾波Q_(C)和η值随时间的变化,发现在2017年武隆M_S5.0地震发生后,WUL和LAX台站记录的Q_(0)和η值存在短期的异常变化,Q_(0)值呈“V”形态,η值呈倒“V”形态,η与Q_(0)值呈反向变化,Q_(0)值经历下降-上升的快速调整过程,表明该区构造活动处于活跃期。

关键词： Sato模型地震尾波 Q_(C)值特征重庆武隆地区

动车组高级修工艺数字化管理系统关键技术研究

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铁路计算机应用 2024年第2期33卷 43-48页

作者：朱湘周明涛张海涛卞彬黄凯中国铁道科学研究院研究生部北京100081 中国铁路上海局集团有限公司上海动车段上海201812 上海申铁信息工程有限公司上海200071 中国铁路上海局集团有限公司车辆部上海200071

为解决当前动车组高级修工艺管理存在的问题,基于高级修部件物料清单(BOM,Bill of Materials)和工艺BOM的构建逻辑,以及工艺基础数据标准化、参数化、结构化的实际需要,融合工艺BOM与工艺流程的映射方法,采用SpringBoot+VUE前后端分离... 详细信息

为解决当前动车组高级修工艺管理存在的问题,基于高级修部件物料清单(BOM,Bill of Materials)和工艺BOM的构建逻辑,以及工艺基础数据标准化、参数化、结构化的实际需要,融合工艺BOM与工艺流程的映射方法,采用SpringBoot+VUE前后端分离的开发架构,设计了高级修工艺数字化管理系统。该系统实现了高级修工艺编制规范的统一和编制流程的优化,可自动生成工艺流程图和甘特图,并将准确的规格数据传输到制造执行系统(MES),已在中国铁路上海局集团有限公司上海动车段转向架车间开展应用,满足工艺数字化管理和辅助数字化生产的需要。

关键词：高级修工艺数据动车组管理系统数字化物料清单

The hydrological effect between Jingjiang River and Dongting Lake during the initial period of Three Gorges Project operation

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Journal of Geographical Sciences 2010年第5期20卷 771-786页

作者： CHANG Jiang LI Jingbao LU Dianqing zhu xiang LU Chengzhi ZHOU Yueyun DENG Chuxiong College of Resources and Environment Science Hunan Normal University Changsha 410081 China Hunan Hydro and Power Design Institute Changsha 410007 China

Based on the measured hydrological data from 1951 to 2008, the chain hydrological effect between Jingjiang River and Dongting Lake is analyzed by comparative method after the Three Gorges Project operation. The result indicates that 1） the scouring amount in Jing- jiang River made up 78.9% of the total from Yichang to Chenglingji, and its average scouring intensity was higher than the latter; 2） the water and sand diversion rates at the three outlets of the Jingjiang River were reduced by 2.33% and 2.78% separately; 3） the proportion of multi-year average runoff and sediment through the three outlets in the total into the Dongting Lake decreased by 7.7% and 24.4% respectively; 4） in Dongting Lake, the speed of sediment accumulation was lowered by 26.7%, in flood season, the runoff amount was 20.2% less than the multi-year average value, leading to seasonal scarcity of water year by year. The former prolonged the lake life, while the latter induced droughts in summer and fall in successive years, shortage of drinking and industrial water, shipping insecurity, as well as ecological problems such as decrease of birds and quick increase of Microtus fortis; 5） The multi-year average values of sediment and flood transporting capacity at the lake outlet were respec- tively increased by 26.6% and 3.7%, the adapt to the new change of the river-lake embankments were protected effectively. Then, to relation, some suggestions were put forward, such as optimizing further operation program of the Three Gorges Reservoir, reexamining the idea of river and lake regulation, and maintaining connection of the river and the lake.

关键词： initial period of Three Gorges Project operation silt-discharge relating hydrological effect DongtingLake area

CO_2 capture through halogen bonding: A theoretical perspective

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Science China Chemistry 2012年第8期55卷 1566-1572页

作者： LI HaiYing LU Yunxiang zhu xiang PENG ChangJun HU Jun LIU HongLai HU Ying State Key Laboratory of Chemical Engineerin0g Department of ChemistryEast China University of Science and TechnologyShanghai 200237China

Halogen bonding interactions between several halogenated ion pairs and CO2 molecules have been investigated by means of density functional theory calculations. To account for the influence of solvent environment, the implicit polarized continuum model was also employed. The bromide and iodide cations of ionic liquids (ILs) under study can interact with CO2 molecules via X O interactions, which become much stronger in strength than those in the complexes of iodo-perfluorobenzenes, very effective halogen bond donors, with CO2 molecules. Such interactions, albeit somewhat weaker in strength, are also observed between halogenated ion pairs and CO2 molecules. Thus, the solubility of CO2 may be improved when using halogenated ILs, as a result of the formation of X O halogen bonds. Under solvent effects, the strength of the interactions tends to be weakened to some degree, with a concomitant elongation of intermolecular distances. The results presented here would be very useful in the design and synthesis of novel and potent ILs for CO2 physical absorption.

关键词： halogen bonding interactions CO2 physical absorption calculations

Neoadjuvant Therapy for Advanced Rectal Carcinoma in China:Whether Radiochemotherapy Is Superior to Radiotherapy?

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Chinese Journal of Cancer Research 2009年第4期21卷 295-303页

作者： Yong Cai Chang-zheng Du xiang-gao zhu Bo Xu Ming Li Jin Gu Key Laboratory of Carcinogenesis and Translational Research （Ministry of Education）Department of Radiotherapy Beijing Cancer Hospital ＆ Institute Beijing 100142 China Key Laboratory of Carcinogenesis and Translational Research （Ministry of Education） Department of Colorectal Surgery Peking University School of Oncology Beijing Cancer Hospital ＆ Institute Beijing 100142 China

Objective： To verify whether the 30 Gy preoperative radiotherapy regimen is effective to advanced rectal cancer, and whether the preoperative chemoradiation offers an advantage in sphincter preservation and tumor control compared with irradiation alone. Methods： A total of 141 patients administered neoadjuvant treatment with resectable lower rectal carcinoma from 2002 to 2006 were collected retrospectively. The patients were divided into two groups： preoperative radiotherapy alone （30Gy by 10 fractions）（PRT group） and preoperative chemoradiotherapy （PCRT group）. All patients underwent radical surgery after neoadjuvant treatment. Results： The overall sphincter-preservation rate was 68.8% （97/141）, with no significant difference between the two groups. The overall downstaging rate was 48.2% （68/141）, including 4 patients completely response （2.8%）. The T and N downstaging rate were 30.5% （43/141） and 53.8% （57/106） respectively, showing no statistically difference between the two groups. The 2-year overall survival rate was 93.6%; no survival benefit were observed in PCRT group. The 2-year cumulative local recurrence rates were similar as well （4.2% vs 6.7%, P=0.63）. Two patients with severe marrow suppression higher than grade 3 and 1 patient with severe perineum ulcer was observed in PCRT group, which did not occur in PRT group. Conclusion： The preoperative adjuvant treatment of 30Gy radiotherapy alone may be an optional treatment for Chinese lower rectal carcinoma. Preoperative chemoradiotherapy does not show actual superiority compared with radiotherapy alone.

关键词： Rectal carcinoma Neoadjuvant radiotherapy Total mesorectal excision Tumor downstaging Pathologic complete response

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数字式交流恒流源传导电磁干扰抑制方法

电力电子技术 2024年第4期58卷 53-56页

作者：许谦赵升朱翔鸥谢喜龙温州大学电气与电子工程学院浙江温州325035

数字式交流恒流源中大量功率开关器件的使用产生了严重的传导电磁干扰(EMI)噪声,为了抑制交流恒流源传导EMI噪声,此处设计了一种基于耦合电感的EMI滤波器。该滤波器由耦合电感模块和差模电容等部分构成,利用耦合电感模块等效出的共模负... 详细信息

数字式交流恒流源中大量功率开关器件的使用产生了严重的传导电磁干扰(EMI)噪声,为了抑制交流恒流源传导EMI噪声,此处设计了一种基于耦合电感的EMI滤波器。该滤波器由耦合电感模块和差模电容等部分构成,利用耦合电感模块等效出的共模负电容抵消恒流源系统寄生电容,阻断噪声传导路径,抑制交流恒流源输入侧共模噪声,利用等效出的共模正电容与差模电感抑制恒流源输出侧噪声。实验结果表明,该EMI滤波器能显著抑制恒流源输入侧和输出侧的传导EMI噪声,且使用较少的元器件,有效减小了滤波器体积及成本。

关键词：滤波器恒流源电磁干扰噪声耦合电感

蛋白质精氨酸甲基转移酶调控骨形成与骨愈合的研究进展

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实用临床医药杂志 2024年第5期28卷 126-129,134页

作者：吴楠郑苗苗王信哲朱祥唐昊上海理工大学健康科学与工程学院上海200093 中国人民解放军海军军医大学附属长海医院创伤骨科上海200433

蛋白质精氨酸甲基化是由蛋白质精氨酸甲基转移酶(PRMTs)介导的调控蛋白质功能的重要翻译后修饰(PTM),其与众多疾病的发生发展密切相关。精氨酸的甲基化修饰与炎症相关疾病及骨折愈合关系密切,PRMTs表达下降可导致骨折延迟愈合甚至不愈合... 详细信息

蛋白质精氨酸甲基化是由蛋白质精氨酸甲基转移酶(PRMTs)介导的调控蛋白质功能的重要翻译后修饰(PTM),其与众多疾病的发生发展密切相关。精氨酸的甲基化修饰与炎症相关疾病及骨折愈合关系密切,PRMTs表达下降可导致骨折延迟愈合甚至不愈合。PRMT5、PRMT6在骨折愈合方面均有重要意义,其与PI3K-AKT通路、NF-κB通路息息相关。探讨蛋白质精氨酸甲基化与骨折愈合之间的联系,可为预防骨折延迟愈合甚至不愈合提供新思路。

关键词：蛋白质精氨酸甲基化蛋白质精氨酸甲基转移酶 PRMT5 PRMT6 骨折愈合成骨细胞破骨细胞

Colorectal cancer resection rates in patients with inflammatory bowel disease:a population-based study

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Gastroenterology Report 2018年第4期6卷 263-269,I0001页

作者： Udayakumar Navaneethan xiang zhu Dennisdhilak Lourdusamy Vennisvasanth Lourdusamy Bo Shen Ravi Kiran Center for Interventional Endoscopy Florida HospitalOrlandoFL 32803USA Center for Inflammatory Bowel Diseases The Cleveland ClinicClevelandOH 44195USA Division of Colorectal Surgery Columbia University Medical Center/New York Presbyterian HospitalNew YorkNY 10032USA

Background and objective:Inflammatory bowel disease(IBD)is associated with an increased risk of colorectal cancer(CRC).This study aimed to analyse the trends in rates of resection for IBD-related CRC in the ***:We used the Nationwide Inpatient Sample from 1995 to *** trends in age-adjusted rates of resection for CRC in the setting of IBD were analysed using multivariate Joinpoint regression *** primary outcome was surgical resection of CRC in the setting of ***:We included 3597168 IBD discharges in the present study,of which 275479 underwent CRC resection between 1995 and *** annual CRC resection rates among IBD population decreased significantly from 1995 to *** decrease was significant in all age groups with an annual decrease of 393(P75 years,*** annual IBD-CRC resection rate per 100000 IBD discharges for proximal CRC decreased by 149(P75 years,between 1995 and *** multivariate Poisson regression analysis,after adjustment for age and sex,CRC resections decreased by 3.9%each year from 1995 to ***:CRC resection rates among IBD patients have continued to decrease annually from 1995 to *** is a population-level decrease in resection of both proximal and distal CRC reflecting a decreasing incidence of IBD-related CRC incidence in the USA.

关键词： Colorectal cancer inflammatory bowel disease Crohn’s disease ulcerative colitis surgery