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文章介绍了智能网与Internet互通的原理,以及PINT（PSTN Internet iNTerworking）业务的基本概念和网络结构,并对PINT协议进行了分析。同时给出了智能网与Internet互联的模型,并结合点击拨号业务讨论了其具体的实现方式。最后讨论了互联时的安全问题。

Copyright of Journal of Beijing University of Technology is the property of Journal of Beijing University of Technology, Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Beijing University of Civil Engineering & Architecture is the property of Journal of Beijing University of Civil Engineering & Architecture Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power is the property of Electric Power Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South-Central Minzu University (Natural Science Edition) is the property of Journal of South-Central Minzu University (Natural Science Edition) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CT Theory & Applications is the property of Editorial Department of CT Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oncology Prevention & Treatment is the property of Editorial Department of Chinese Journal of Oncology Prevention & Treatment and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Advanced Textile Technology is the property of Zhejiang Sci-Tech University Magazines and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Practical Medicine / Shiyong Yixue Zazhi is the property of Journal of Practical Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Biology Teaching is the property of East China Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Wildland Fire Science is the property of Journal of Wildland Fire Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Time-varying meshing stiffness was the periodic internal excitation of the gear pair, which was the main source of the vibration and noise of the gear transmission system. Aiming at the calculation of the meshing stiffness of spur gears with tooth profile modification, an improved analytical model of the meshing stiffness of spur gears with nonlinear contact profile modification was proposed based on the idea of energy equivalence, combined with the cantilever beam model and considering the nonlinear contact between contact pairs. Firstly, based on the existing literature, the gear tooth was simplified as a cantilever beam on the root circle and the three-dimensional transmission model of spur gear pair was transformed into two-dimensional plane tooth profile for contact analysis, a semi-analytical model of single tooth meshing stiffness was constructed by energy method considering the nonlinear contact between tooth pairs. Then, the equations of deformation coordination and force balance were supplemented to derive the time-varying meshing stiffness model of spur gear pair with tooth profile modification. Finally, compared with the finite element calculation results, the calculation method was verified and the influence rules of friction and different gear parameters on meshing stiffness were analyzed. The research results show that, compared with the traditional finite element calculation results, the calculation error obtained by using this analytical model is less than 3%, and the calculation speed is 150 times higher, and the rapid solution of meshing stiffness of the spur gear with nonlinear contact can be realized under the condition of little precision loss. [ABSTRACT FROM AUTHOR]

Copyright of China Harbour Engineering is the property of Editorial Office of China Harbour Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shanghai University / Shanghai Daxue Xuebao is the property of Journal of Shanghai University (Natural Sciences) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Harbour Engineering is the property of Editorial Office of China Harbour Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The secondary outfitting work of the immersed tube needs to be carried out in a floating state. The measuring tower is an important outfitting part in the secondary outfitting. Its calibration of the precise position of pipe sections is related to the success of the floating installation of the immersed tube. Since the pipe sections are floating on the sea surface, it poses a huge challenge to the calibration of the measuring tower. In this paper, the calibration methods of measuring towers in the floating state of five pipe sections were introduced, and their advantages and disadvantages were analyzed, and the calibration methods used in the Dalian Bay subsea tunnel project were analyzed. The results show that the accuracy of the GNSS synchronization calibration method can reach 2 cm on the plane, and that of total station floating calibration method can reach 1 cm on the plane, which meets engineering needs. The results can provide reference for other similar marine engineering calibration measurements. [ABSTRACT FROM AUTHOR]

complex environment, the object tracking algorithm of fully-convolutional Siamese network is prone to track drift or even track failure. In order to solve the problem, this paper proposed a Siamese network tracking algorithm based on hard sample mining. On the basis of SiamFC, this method first used a feature fu sion module for feature fusion to enhance the robustn ess of feature representation, and then proposed a novel loss function to strengthen the learning ability of network to hard samples and alleviate the problem of imbalance between positive and negative samples. To verify the validity, this method was tested on OTB2015 benchmark and GOTlOk dataset. The results of OTB2015 show that this method increases the success rate by 2 . 6% and the accuracy by 2% compared with SiamFC. On the GOTlOk dataset, the mAO of this method is 0. 429, which is 3 . 7% higher than the SiamFC. It proves that this method has a better performance in the case of illumination variation, object deformation, and similar background interference. [ABSTRACT FROM AUTHOR]

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To observe the clinical efficacy of scalp micropigmentation in the improvement of see-through donor area after follicular unit extraction (FUE). Methods From April 2020 to 2021, scalp micropigmentation was performed in 21 patients after FUE to improve donor area hair depletion. Appropriate pigment was chosen. The depth of needle was set at 0.9 to 1.2 mm. In case of decolorization or uneven pigment, patients generally have one or more touchup sessions after 2 to 4 weeks. The patient satisfaction, pain, bleeding and adverse reactions were evaluated. Results All patients had no obvious pain during the operation, 14 patients had slight bleeding. The follow-up ranged from 3 to 12 months. Nine patients had once touchup session and 4 patients had twice touchup session. After scalp micropigmentation, scars in donor area was imperceptible and no see-through appearance was found. Except for 1 patient had mild allergic reaction, no adverse reactions such as infection, allergy or pigment spreading out was found in remaining patients. In all patients, 85.7% were very satisfied with the efficacy. Conclusion Scalp micropigmentation was safe and effective in the treatment of see-through donor area. [ABSTRACT FROM AUTHOR]

Copyright of Piezoelectrics & Acoustooptics is the property of Piezoelectric & Acoustooptic and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin University of Science & Technology is the property of Journal of Harbin University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Preventive Veterinary Medicine / Zhongguo Yufang Shouyi Xuebao is the property of Chinese Journal of Preventive Veterinary Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of China Medical University is the property of Journal of China Medical University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the value of soluble fibrinogen-like protein 2 (sFgl2) assay in predicting clinical outcome and prognosis in patients with chronic viral hepatitis. Methods The level of sFgl2 in serum was tested by ELISA method in 85 patients with chronic hepatitis (42 cases of hepatitis B and 43 ones of hepatitis C), 108 liver cirrhosis patients (35 cases of hepatitis B and 73 ones of hepatitis C), and 72 healthy controls. Spearman correlation was analyzed between sFgl2 level and liver function or Child-Pugh classification. Results The sFgl2 level was significantly higher in liver cirrhosis group than in chronic hepatitis group and healthy controls. As the Child-Pugh score increased, the sFgl2 level of liver cirrhosis patients increased gradually. Regardless of the etiology, the positive relation between sFgl2 with TBIL and negative relation between sFgl2 with ALB could be detected. However, sFgl2 level did not have correlation with viral load or the level of ALT or AST. Conclusion The study further confirmed that serum sFgl2 was significantly elevated in patients with liver cirrhosis and that sFgl2 level was positively correlated with Child-Pugh score. It suggests that sFgl2 level is related to the severity of cirrhosis and may become a tool to evaluate the prognosis of cirrhosis. [ABSTRACT FROM AUTHOR]

【Objective】 The joint segregation analysis method of mixed major gene plus polygene genetic model was used to study the inheritance of curing characteristics in flue-cured tobacco. Recombinant inbred lines derived from ‘Yunyan 85’ × ‘Dabaijin 599’ were investigated. 【Method】 The breeding lines were different from one another in curing traits. ‘Yunyan 85’ with excellent easy curing trait and holding curing potential was used, while ‘Dabaijin 599’ was low-quality in curing characteristics. 【Result】 It was found that easy curing trait appeared to be a quantitative trait and the inheritance fit to a model of four major genes with additive-epistatic effects. Genetic effects were mainly controlled by additive effects of the first and second major genes. Heritabilities of the major genes were estimated to be 95. 98 %. The inheritance of holding curing potential fit to a mixed genetic model of two major genes with additive-epistatic effects plus polygenes with additive-epistatic effects. The additive effects of major genes were negative and the epistatic effects were also important. Heritabilities of the major genes and polygenes were estimated to be 54. 26 % and 17. 82 % respectively. 【Conclusion】 The inheritance of curing characteristics in flue-cured tobacco is controlled by major genes. [ABSTRACT FROM AUTHOR]