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Converse and saturation results on Tikhonov regularization together with a posteriori parameter choice

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Science China Mathematics 1999年第11期42卷 1137-1146页

作者：金其年 1. Institute of Mathematics Nanjing University 210008 Nanjing China

Some converse and saturation results on Tikhonov regularization of nonlinear ill-posed problems are proved and the a posteriori parameter choice yielding optimal rates of convergence is discussed.

关键词： nonlinear ill-posed problems Tikhonov regularization converse and saturation results a posteriori parameter choice.

Deformation field around a thrust fault:A comparison between laboratory results and GPS observations of the 2008 Wenchuan earthquake

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Earth and Planetary Physics 2019年第6期3卷 501-509页

作者： Ru Liu YongHong Zhao JiaYing Yang Qi Zhang AnDong Xu School of Earth and Space Sciences Peking University

On May 12,2008,an Mw7.9 earthquake occurred in Wenchuan County,Sichuan Province,*** of Yingxiu–Beichuan Fault in the Longmenshan Fault Zone was considered to be the main cause of the *** are closely related to fault ***,studying the strain distribution and evolution process around active fault zones is important to the understanding of seismic *** this study,we conduct laboratory experiments with uniaxial compression applied to marble sheets with intentionally fabricated *** speckle patterns of the rock samples under different loading conditions are recorded in real time by a digital *** calculate the deformation fields of the deliberately cracked marble sheets during different stages of the loading processes,the recorded images are processed by the digital image correlation *** distribution and variation of the displacement and strain are further analyzed in order to understand the strain localization of and observed damage in the experimental fracture ***,we compare these laboratory results with the GPS-observed coseismic displacements during the 2008 Wenchuan earthquake,to assess the consistency between our laboratory observations and the field observations of the earthquake,but also to suggest how laboratory results can improve thinking about how earthquake patterns do and do not reflect fault patterns.

关键词： deformation field thrust fault Wenchuan earthquake GPS observations experimental results

CRESDA APPLICATION SYSTEM OF CBERS-1, results AND TYPICAL EXAMPLES OF APPLICATIONS

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空间科学学报 2002年第z1期22卷 190-197页

作者： WU Meirong China Center for Resources Satellite Data and Application Beijing 100830 P.R. China

CRESDA Application System of CBERS-1 was established in 1999. During the operation of the system for more than two years, about 240 000 scenes of CBERS-1 Level 0 data have been archived and more than 13 000 scenes of Level 2 products have been ordered by end users from different application *** this paper, the typical examples of applications in crop yield estimation,calamity alleviation, resources survey and protection, environment monitoring and continuable development, and urban planning are mainly described.

关键词： CBERS-1, Application System, results of applications

Some results Concerning the Consistency of Ls and LAD Estimates of Multiple Regression（I）

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数学进展 1995年第2期 187-188页

作者：金明仲，陈希孺

ＳｏｍｅＲｅｓｕｌｔｓＣｏｎｃｅｒｎｉｎｇｔｈｅＣｏｎｓｉｓｔｅｎｃｙｏｆＬｓａｎｄＬＡＤＥｓｔｉｍａｔｅｓｏｆＭｕｌｔｉｐｌｅＲｅｇｒｅｓｓｉｏｎ（Ｉ）ＪｉｎＭｉｎｇｚｈｏｎｇ（金明仲）（ＧｕｉｚｈｏｕＮａｔｉｏｎ... 详细信息

ＳｏｍｅＲｅｓｕｌｔｓＣｏｎｃｅｒｎｉｎｇｔｈｅＣｏｎｓｉｓｔｅｎｃｙｏｆＬｓａｎｄＬＡＤＥｓｔｉｍａｔｅｓｏｆＭｕｌｔｉｐｌｅＲｅｇｒｅｓｓｉｏｎ（Ｉ）ＪｉｎＭｉｎｇｚｈｏｎｇ（金明仲）（ＧｕｉｚｈｏｕＮａｔｉｏｎａｌＣｏｌｌｅｇｅ，Ｇｕｉｙａｎｇ...

关键词：陈希孺 results Some Multiple Regression the Ls and LAD 金明仲 Concerning

Comprehensive analysis of results of surgical treatment of oraltongue carcinoma in Hong Kong

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Chinese Medical Journal 1997年第11期 43-48页

作者： Po Wing Yuen, William I. Wei, Yue Ming Wong, Kwong Chi Tang and Lai Kun Lam

Objective To evaluate the results of primary surgical treatment of carcinoma of oral tongue in Hong Kong. Methods Patients who had undergone primary surgical treatment of oral tongue carcinoma in Queen Mary Hospital were reviewed. results There were 112 patients in this study. The first sites of tumor recurrence were 10 (9%) local, 25 (22%) nodal, 3 (3%) locoregional, 5 (5%) distant, 1 (1%) local and distant, 3 (3%) nodal and distant, and 1 (1%) neck extranodal site. Of the 63 T1 2 N0 M0 patients, the regional recurrence rate was 9% for elective neck dissection compared with 47% for “watchful waiting” (Chi square test, [WTBX]P=0.0008). The regional recurrence related mortality was 3% for elective neck dissection compared with 23% for “watchful waiting” (Fisher's test, P=0.02). The 5 year actuarial survival rate was 86% for elective neck dissection compared with 55% for “watchful waiting” (Wilcoxon, P=0.01). Conclusions Local and regional recurrences were the main sites of treatment failure. Elective neck dissection has significant benefits in the reduction of regional failure and improvement of survival. Elective selective Ⅰ Ⅲ neck dissection have to be considered in patients with stage Ⅰ and stage Ⅱ oral tongue carcinoma.

关键词： analysis results oraltongue Hong Comprehensive

NEW MAGNETOSTRATIGRAPHIC AND SEDIMENTOLOGIC results FROM TERTIARY SEDIMENTS OF THE HOH XIL BASIN, NORTHERN QINGHAI-TIBET PLATEAU: IMPLICATIONS FOR THE CENOZOIC TECTONIC HISTORY OF THE TIBET PLATEAU

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地学前缘 2000年第S1期7卷 239-240页

作者： Zhao Xixi 1, Liu Zhifei 2,3 , Wang Chengshan 3, Liu Shun 3 , Yi Haisheng 3[WT5,5”BX](1 Institute of Tectonics, University of California, Santa Cruz, California 95064, USA, xzhao@es. ucsc.edu 2 Laboratory of Marine Geology, Tongji University,

To contribute to the understanding of the ages of large sedimentary basins in northern Tibet, and the Cenozoic tectonic history of Asia in general, we conducted an integrated paleomagnetic and stratigraphic study on the sedimentary sequences of the Hoh Xil basin, north of the Qinghai\|Tibet Plateau. Red sedimentary sections from the Fenghuoshan and Yaxicuo Groups have recorded a pattern of magnetic polarity reversals that correlates well with the known magnetic polarity time scale for the past 56Ma. Reliable magnetostratigraphy for the Fenghuoshan and Yaxicuo Groups suggests that the sediment ages for these two groups are about 56～29Ma and 29～25Ma, *** collected more than 1000 paleomagnetic samples from 335 sites distributed in 3 sections of the Hoh Xil basin. Detailed litholostratigraphic, petrologic, and sedimentologic studies have also been carried out on these sections during the past three field sessions. Magnetic directions in these sites were obtained by progressive alternating\|field and thermal demagnetization experiments. Most samples exhibit two components of magnetization. The lower unblocking temperature component is an overprint resembling the geocentric axial dipole field direction at the sampling locality. The most stable, characteristic remanence (ChRM) appears to be an early chemical remanent magnetization residing mainly in hematite. Curie temperature determinations, acquisition of isothermal remanent magnetization (IRM) and backfield demagnetization of saturation IRM, hysteresis loop parameters, and low\|temperature demagnetization on representative samples all corroborate demagnetization behavior. The positive results of fold and reversal tests indicate that the ChRM is a record of the paleomagnetic field close to the time of formation of these sediments. Further evidence that the magnetization of these sediments was acquired close to their time of deposition is the fact that patterns of magnetic reversals have been identified, which

关键词： magnetostratigraphic and sedimentologic results Hoh Xil Basin

results of Chronic Neck Pain Rehabilitation at Cotonou

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Open Journal of Therapy and Rehabilitation 2021年第4期9卷 154-161页

作者： H. Etienne Alagnide Wilfried Dahoueto D. Didier Niama Natta Herman Azanmasso Yves Anani Djimingaye Natoyallah G. Toussaint Kpadonou University Clinic of Physical Medicine and Rehabilitation National University Hospital Center (CNHU-HKM) Cotonou Benin

Background: Neck pain is a real public health problem. Its treatment uses different techniques, such as functional rehabilitation, whose results are not widely popularized, from developing countries in Black Africa. Objective: To assess the result of rehabilitation of chronic common neck pain (CCNP) at the CNHU-HKM in Cotonou. Methods: Cross-sectional, retrospective, descriptive and analytical study. It was carried out from May to September 2020, based on the files of former patients followed in functional rehabilitation department at CNHU-HKM in Cotonou, from 2015 to 2019, for CCNP. The result of rehabilitation was assessed based on the progress, between the start and the end of the rehabilitation sessions, of pain intensity, mobility of the cervical spine, muscle strength and functional capacity of the patient. Anova and chi-square tests were used for the analysis of factors associated with the result of rehabilitation. Results: The sample consisted to 73 patients. They were predominantly female (58.90%), with a mean age of 53.60 ± 14.08 years. The neck pain, at least of moderate intensity (97.26%), was present since 12.54 ± 8.54 months, on average. Patients have done 10 to 20 functional rehabilitation sessions, the result of which was satisfactory in 67.12%. This result was mainly associated with patient’s age, sports practice and the seniority of pain progression. Discussion-Conclusion: Rehabilitation results in the management of CCNP are interesting. They prove the need to sensitize patients and prescribers on the importance of early treatment of CCNP.

关键词： Chronic Neck Pain Functional Rehabilitation results Cotonou

Anterior rectopexy for full-thickness rectal prolapse: Technical and functional results

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World Journal of Gastroenterology 2015年第16期21卷 5049-5055页

作者： Jean-Luc Faucheron Bertrand Trilling Edouard Girard Pierre-Yves Sage Sandrine Barbois Fabian Reche Colorectal Unit Department of SurgeryUniversity Hospital

AIM:To assess effectiveness, complications, recurrence rate, and recent improvements of the anterior rectopexy procedure for treatment of total rectal ***:MEDLINE, Pub Med, EMBASE, and other relevant database were searched to identify *** controlled trials, non-randomized studies and original articles in English language, with more than 10 patients who underwent laparoscopic ventral rectopexy for full-thickness rectal prolapse, with a follow-up over 3 mo were considered for the ***:Twelve non-randomized case series studies with 574 patients were included in the *** surgical mortality was *** was needed in 17 cases(2.9%), most often due to difficult *** eight patients(4.8%) presented with major ***(1.2%) mesh-related complications were *** frequent complications were urinary tract infection and urinary *** recurrence rate was 4.7% with a median follow-up of 23 *** of constipation ranged from 3%-72% of the patients and worsening or new onset occurred in 0%-20%.Incontinence improved in 31%-84% patients who presented fecal incontinence at various *** of functional score was disparate between ***:Based on the low long-term recurrence rate and favorable outcome data in terms of low de novo constipation rate, improvement of anal incontinence, and low complications rate, laparoscopic anterior rectopexy seems to emerge as an efficient procedure for the treatment of patients with total rectal prolapse.

关键词： Total rectal prolapse Laparoscopy Anteriorrectopexy Ventral rectopexy results Recurrence Systematic review

Generalization of results of Computations and Natural Experiments at Steel Parts Quenching

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Journal of Shanghai Jiaotong university(Science) 2000年第1期5卷 128-134页

作者： Nikolai I.Kobasko Engineering Thermophysics Institute of National Academy of Sciences, Kyiv, Ukraine

Complicated changes occur inside the steel parts during quenching process. A three dimensional nonlinear mathematical model for quenching process has been established and the numerical simulation on temperature field, microstructure and stress field has been realized. The alternative technique for the formation of high-strength materials has been developed on the basis of intensification of heat transfer at phase transformations. The technology for the achievement of maximum compressive residual stresses on the hard surface is introduced. It has been shown that there is an optimal depth of hard layer providing the maximum compression stresses on the surface. It has also been established that in the surface hard layer additional strengthening (superstrengthening) of the material is observed. The generalized formula for the determination of the time of reaching maximum compressive stresses on the surface has been proposed.

关键词： Quenching Phase Transformation Temperature Field Stress Field Maximum Compressive Stresses Superstrengthening of Materials Generalization of results of Computations.