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| 1 | 基于神经网络模型的结构参数提取新方法显示文摘参数识别是结构健康监测、性能评估的关键问题之一。作为一种代表性的动力系统时域参数化模型方法,自回归滑动平均(Auto-regressive and moving average,ARMA)模型在机械和土木工程结构的参数识别中得到了广泛应用;另一方面,尽管一般而言神经网络模型的权重和阈值并不需要具备明确的物理意义,但由于神经网络具有描述复杂函数关系的能力,作为一种非参数化模型方法在结构动力系统的建模和控制领域发挥重要作用。该文首先通过结构运动平衡方程的离散时间解,证明了非参数化神经网络模型与ARMA模型在描述线性结构动力系统的响应时间序列上的等效性,在此基础上,提出了一种从结构的非参数化神经网络模型中抽取结构物理参数的新方法。通过一个多自由度系统的数值模拟结果和一个四层钢框架模型的动力试验实测数据验证了所提出的结构参数抽取方法的有效性。 | 许斌 龚安苏 贺佳 MASRI Sami F | 2011 | 工程力学2011，28，4： | 4 |
| 2 | Effectiveness of hepatitis B virus vaccination program in Egypt:Multicenter national project显示文摘AIM:To assess the effectiveness of hepatitis B virus(HBV) vaccination program among fully vaccinated children.METHODS:A national community based crosssectional study was carried out in 6 governorates representing Egypt. A total of 3600 children aged from 9 mo to 16 years who were fully vaccinated with HBV vaccine during infancy were recruited. Face to face interviews were carried out and sera were evaluated for hepatitis B surface antigen(HBsA g),anti-HBV core antibodies(total) and quantitative detection of hepatitis B surface antibody using enzyme linked immunoassays techniques. Samples positive to HBs Ag/anti-HBV core antibodies were subjected to quantitative HBV-DNA detection by real time polymerase chain reaction with 3.8 IU/L detection limit. RESULTS:Sero-protection was detected among 2059 children(57.2%) with geometric mean titers 75.4 ± 3.6 IU/L compared to 3.1 ± 2.1 IU/L among nonseroprotected children. Multivariate logistic analysis revealed that older age and female gender were the significant predicting variables for having non seroprotective level,with adjusted odds ratio 3.3,9.1and 14.2 among children aged 5 to < 10,10 to < 15 and ≥ 15 years respectively compared to those < 5 years and 1.1 among girls compared to boys with P < 0.01. HBs Ag was positive in 0.11% and breakthrough infection was 0.36% and 0.39% depending on positivity of anti-HBc and DNA detection respectively. The prevalence of HBV infection was significantly higher among children aged ≥ 7 years(0.59%) compared to 0.07% among younger children with odds ratio equal to 8.4(95%CI:1.1-64.2) and P < 0.01.The prevalence was higher among girls(0.48%) than boys(0.29%) with P > 0.05. C ON C LU S I ON :T he E gy pt ian c ompuls or y H B V vaccination program provides adequate protection. Occult HBV infection exists among apparently healthy vaccinated children. Adherence to infection control measures is mandatory. | Iman I Salama Samia M Sami Zeinab Nabil Ahmed Said Manal H El-Sayed Lobna A El Etreby Thanaa M Rabah Dalia M Elmosalami Amany T Abdel Hamid Somaia I Salama Aida M Abdel Mohsen Hanaa M Emam Safaa M Elserougy Amal I Hassanain Naglaa F Abd Alhalim Fatma A Shaaban Samia A Hemeda Nihad A Ibrahim Ammal M Metwally | 2015 | World Journal of Hepatology2015，7，22： | 2 |
| 3 | Stability of aflatoxins B1 and ochrotoxin A in brewing显示文摘 | CHU F S CHANG C C SAMY H | 1975 | Applied Microbiology1975，19，3： | 1 |
| 4 | On the decomposition of networks into minimally interconnected networks显示文摘 | Luccio F Sami M | 1969 | IEEE Trans Circuit Theory1969，2，16： | 1 |
| 5 | Capillarity in microfluidic channels with hydrophilic and hydrophobic walls显示文摘 | VILLE J SAMI F | 2008 | Microfluidics Nanofluidics2008，5，4： | 1 |
| 6 | A multi -criteria approach to contractor selection 显示文摘 | IBRAHIM M M MIKE J R SAMI M F | 2002 | Engi- neering Construction and Architectural Management2002，9，1： | 1 |
| 7 | Laparoscopic transcystic bile duct exploration: the treatment of first choice for common bile duct stones 显示文摘 | Hanif F Ahmed Z Samie MA | 2010 | Surg Endosc2010，24，7： | 1 |
| 8 | Laparoscopic transcystic bile dnct exploration:the treatment of first choice for commom bile duct stones显示文摘 | Hanif F Ahmed Z Samie MA | 2010 | SurgEndosc2010，24，7： | 1 |
| 9 | Confinement model for axially loaded concrete confined by circular FRP tubes 显示文摘 | Amir Z F Sami H R | 2001 | Structure Journal2001，98，4： | 1 |
| 10 | Experimental and Analytical Modeling of Concrete-Filled Fiber-Reinforced Polymer Tubes Subjected to Combined Bending and Axial Loads 显示文摘 | Amir F Bart F Sami R | 2003 | Structural Journal2003，100，4： | 1 |
| 11 | Rectification of the background potassium current : a determinant of rotor dynamics in ventricular fibrillation 显示文摘 | SAMIE F H BERENFELD O ANUMONWO J | 2001 | Circ Res2001，89，12： | 1 |
| 12 | Probing genome maintenance functions of human RECQ1显示文摘 | Sami F Sharma S | 2013 | Comput Struct Biotechnol J2013，6，20： | 1 |
| 13 | Comparison of methods in the recovery and amplificability of DNA from fresh and processed sardine and anchovy muscle tissues 显示文摘 | Nadia B Sami F Saloua S | 2011 | Food Chem2011，129，： | 1 |
| 14 | Cerebellopontine angle tumor composed of schwann and meningeal proliferations显示文摘 | Chen A F Samy R N Gantz B J | 2001 | Arch Otolaryngol Head Neck Surg2001，127，11： | 1 |
| 15 | Laparoseopic transcystic bile duct exploration:the treatment of first choice for common bile duct stones 显示文摘 | Hanif F Ahmed Z Samie MA | 2010 | Surg Endose2010，24，7： | 1 |
| 16 | The molecular physiology of tastetransduetion 显示文摘 | Timothy A Gilbertson Sami Damak Robert F Margolskee | 2000 | Current Opinion in Neurobiology2000，10，4： | 1 |
| 17 | Neural network-based kinematic inversion of industrial redundant robots using cooperative fuzzy hint for the joint limits avoidance显示文摘 | Assal Samy F M Watanabe Keigo Izumi Kiyotaka | 2006 | IEEE/ASME Transactions on Mechatronics2006，11，5： | 1 |
| 18 | Assessment of postop- erative pain after Mohs mierographic surgery显示文摘 | Limthongkul B Samie F Humphreys TR | 2013 | Dermatol Surg2013，39，6： | 1 |
| 19 | Identification of a novel calotropis procera protein that can suppress tumor growth in breast cancer through the suppression of NF-KB pathway显示文摘 | Samy R P Rajendran P Li F | 2012 | PLoS One2012，7，48： | 1 |
| 20 | Concrete-filled steel tubes subjected to axial compression and lateral cyclic loads显示文摘 | Amir F Fran K S Q Sami R | 2004 | Journal of Structural Engineering2004，130，4： | 1 |
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