http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
l2-l∞ Control for Sampled-data Systems with Packet Dropout: Switched System Method
Xiaoling Li,Linlin Hou 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.11
In this paper, the problem of l2 −l∞ control is investigated for the sampled-data systems including packet dropout. The sampled-data system is modeled as a discrete-time switched system based on the number of lost packets. Then the controller is designed to guarantee the discrete-time switched system is exponentially stable with a prescribed l2 −l∞ performance subject to mode dependent average dwell time approach. The sufficient conditions to solve the controller gain is derived via a set of linear matrix inequalities (LMIs). Finally, an example is presented to show the effectiveness of the obtained results.
Xiaoling Qu,Guangyuan Zhou,Rui Wang,Haiyan Zhang,Zhipeng Wang,Min Jiang,Jun Tang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.99 No.-
In pursuit of poly(ethylene 2,5-furandicarboxylate) PEF materials with high molecular weight,satisfactory appearance and faster crystallization rate, its preparation from dimethyl furan-2,5-dicarboxylate (DMFD) with ethylene glycol (EG) in the trace presence of metal zinc was performed viatransesterification method. Optimization of the main polymerization parameters enabled Zn-catalyzedPEF to gain high molecular weight (Mn, 5.40 104 g mol 1) and low content of diethylene glycolfurandicarboxylate unit (DEGF, 2.91%). On the basis of experimental phenomena and high performanceliquid chromatography (HPLC), the actual catalytic active species of metal zinc in the polymerization wasspeculated to be a salt of 2, 5-furandicarboxylate derivative (Zn(II)). The in-stiu catalyst can efficaciouslyinhibit the influence of by-product FDCA on the color of PEF, which displayed quite better appearance(close to white). Differential Scanning Calorimetry (DSC) showed that the in-stiu catalytic system acted asnucleating agent (NA) and the crystallization half-time (t1/2) of PEFs-Zn was only 1/4 of that of PEF-tin. Additionally, series of high molecular weight furan-based polyesters from DMFD and diols with differentmethylene (3, 5, 6 and 8) were obtained by zinc powder as in-stiu catalyst, which further evidenced it tobe efficiency and universality.
Whole Exome Sequencing in the Accurate Diagnosis of Bilateral Breast Cancer: a Case Study
Xiaoling Li,Mei Yang,Qiangzu Zhang,Yanhui Fan,Teng Zhu,Fulong Chen,Kun Wang 한국유방암학회 2019 Journal of breast cancer Vol.22 No.1
When faced with a case of bilateral breast cancer (BBC), understanding how to differentiate bilateral primary breast cancer from contralateral metastatic breast cancer is essential for treatment, but clear identification criteria have not been established to date. Diverse events play different roles in the therapy and prognosis of BBC; hence, it is of great significance to detect a more comprehensive and convincing technique to make an accurate differential diagnosis. We report a rare case of synchronous BBC in a 61-year-old Chinese woman. Based on her clinical and pathological features and the use of whole exome sequencing and cancer genome analysis, we concluded that the patient developed contralateral metastatic breast cancer which metastasized from left to right. Therefore, together with clinical, pathological and cancer genomics information, we could precisely define the origin and evolution of BBC.
Error Correction in College EFL Writing Instruction : Students’ Expectations and Correction Effects
Xiaoling Ji 아시아영어교육학회 2015 The Journal of Asia TEFL Vol.12 No.1
The growing body of research on corrective error feedback in the past two decades has been mostly carried out in the ESL context and has concluded its effectiveness, with controversy remaining regarding its effects on EFL learners. The present study was set in the college EFL context. A survey at the beginning of the study suggested that students preferred indirect error correction where instructors underline errors and indicate error types at the same time. The one-semester experiment focused on the effects of two types of indirect error correction regarding seven treatable errors. The results showed that both types of indirect error correction were effective as the number of errors per hundred words decreased significantly in the post-test. In the delayed post-test, the group that received coded error correction maintained a significant improvement in language accuracy compared with the pre-test, suggesting that underlining errors coupled with providing error codes has better delayed effects. However, some types of errors showed an increase in frequency from the pre-test to the delayed post-test, despite the significant decrease in the total number of errors.
Dually flat and projectively flat Finsler warped product structures
Xiaoling Zhang,Xuesong Zhang,Lili Zhao 대한수학회 2022 대한수학회보 Vol.59 No.6
In this paper, we study the Finsler warped product metric which is dually flat or projectively flat. The local structures of these metrics are completely determined. Some examples are presented.
Xiaoling Zhuang,Yuanpeng Wang,Qingbiao Li,Shan Yan,Ning He 한국생물공학회 2012 Biotechnology and Bioprocess Engineering Vol.17 No.5
A bioflocculant produced by B. licheniformis was investigated with regard to a low-cost culture medium and its industrial application. Molasses replaced sucrose as the sole carbon source in bioflocculant fermentation. The optimum low-cost culture medium was determined to be composed of 20 g/L molasses, 0.4 g/L urea, 0.4 g/L NaCl,0.2 g/L KH2PO4, 1.6 g/L K2HPO4, and 0.2 g/L MgSO4. The bioflocculant from B. licheniformis was then applied to treat sugarcane-neutralizing juice to remove colloids,suspended particles, and coloring matters in a sugar refinery factory. The optimal operation conditions were a bioflocculant dosage of 21 U/mL, pH 7.3 and a heating temperature of 100oC. The color and turbidity of the sugarcane juice reached IU 1267 and IU 206, respectively,after clarification with the bioflocculant; these values were almost the same as those acquired following treatment with polyacrylamide (PAM), the most widely applied flocculant in sugar industries. These results suggest the great potential for use of bioflocculants in the sugar refinery process. A bioflocculant produced by B. licheniformis was investigated with regard to a low-cost culture medium and its industrial application. Molasses replaced sucrose as the sole carbon source in bioflocculant fermentation. The optimum low-cost culture medium was determined to be composed of 20 g/L molasses, 0.4 g/L urea, 0.4 g/L NaCl,0.2 g/L KH2PO4, 1.6 g/L K2HPO4, and 0.2 g/L MgSO4. The bioflocculant from B. licheniformis was then applied to treat sugarcane-neutralizing juice to remove colloids,suspended particles, and coloring matters in a sugar refinery factory. The optimal operation conditions were a bioflocculant dosage of 21 U/mL, pH 7.3 and a heating temperature of 100oC. The color and turbidity of the sugarcane juice reached IU 1267 and IU 206, respectively,after clarification with the bioflocculant; these values were almost the same as those acquired following treatment with polyacrylamide (PAM), the most widely applied flocculant in sugar industries. These results suggest the great potential for use of bioflocculants in the sugar refinery process.
Xiaoling Cao,Liangjun Yan 한국자원공학회 2018 Geosystem engineering Vol.21 No.5
With the urbanization in recent years, the power line interference noise in electromagnetic signal is increasing day by day, and has gradually become an unavoidable component of noises in magnetotelluric signal detection. Therefore, a kind of power line interference noise elimination method based on independent component analysis in wavelet domain for magnetotelluric signal is put forward in this paper. The method first uses wavelet decomposition to change single-channel signal into multi-channel signal, and then takes advantage of blind source separation principle of independent component analysis to eliminate power line interference noise. There is no need to choose the layer number of wavelet decomposition and the wavelet base of wavelet decomposition according to the observed signal. On the treatment effect, it is better than the previous power line interference removal method based on independent component analysis. Through the de-noising processing to actual magnetotelluric measuring data, it is shown that this method makes both the apparent resistivity curve near 50 Hz and the phase curve near 50 Hz become smoother and steadier than before processing, i.e., it effectively eliminates the power line interference noise.