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An analytical approach for nonlinear response of elastic cable under complex loads
Lu, L.Y.,Chan, S.L.,Lu, Z.H. Techno-Press 1997 Structural Engineering and Mechanics, An Int'l Jou Vol.5 No.3
In this paper a general analytical approach is proposed to analyse the nonlinear response of elastic cable under complex loads. The effect of temperature change on the cable is also considered. From the vertical equilibrium equations of cable, the general analytical formula of vertical displacement is derived. Based on the vertical displacement formula and on the compatibility condition of the cable, the dimensionless equation with respect to cable tension is established. By means of such analytical procedures, the exact solutions of various cable problems can be obtained quickly. The example given in this paper shows that the new procedure is efficient for practical analysis and can be easily implemented by a general computer program without the superposition problem which there has always been in traditional analytical methods.
El estudio de la coligacin basado en el corpus
Hui-Chan Lu 한국스페인어문학회 2007 스페인어문학 Vol.0 No.45
El presente trabajo se dedica a estudiar la coligación, es decir, la asociación entre el léxico y la sintaxis, basándonos en el análisis de dos tipos de corpus, por un lado el de los aprendices taiwaneses, que representa la lengua adquirida, extrayendo datos del CAET (Corpus de Aprendices de Español Taiwaneses); y por otro, el de los hablantes nativos de español, chino e inglés, que representan la lengua natural, analizando los datos de tres corpus, el Corpus del Español, el Sinica Corpus y el British National Corpus). Nuestro objetivo será asimilar equitativamente de las dos variedades de lengua y ayudar a los aprendices taiwaneses que aprenden español como segunda lengua extranjera a aumentar su nivel léxico con eficacia. La contribución principal del presente estudio estriba en el hecho de relacionar cuatro corpus de diferentes aspectos para dar luz acerca de diversas cuestiones: el aprendizaje léxicogramatical, la identificación de la relación entre la lengua aprendida y la natural española, y el examen de diferentes factores que pueden intervenir en la adquisición de una segunda lengua extranjera.
Error Analysis of Multidimensional Evaluation of Pilot’s Workload Based on Objective Measures
Chan Wei,Liming Wei,Zhengxiang Cai,Yanyu Lu,Qi Wu,Dan Huang,Shan Fu 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10
Evaluation of pilot’s workload during flight is a significant consideration for the safety of civil aviation. However, some errors may be brought in the measurement and the recording of objective parameters. Based on a multidimensional workload evaluation, the time delay of cardiac activity and its impacts on workload are analyzed. The results suggest that within a certain limit of error around 10s, varying from individual to individual, workload can keep the main information compared to the original workload. As the error increases, the workload may become unreliable. As a consequence, the time-delay error of cardiac activity should be controlled in a limited scale to ensure the validity and reliability of workload.
Lu, Xing,Zhang, Shuangyou,Jeon, Chan-Gi,Kang, Chu-Shik,Kim, Jungwon,Shi, Kebin The Optical Society 2018 Optics letters Vol.43 No.7
<P>We propose and demonstrate a new method which employs time-of-flight detection of femtosecond laser pulses for precise height measurement of large steps. By using time-of-flight detection with fiber-loop optical-microwave phase detectors, precise measurement of large step height is realized. The proposed method shows uncertainties of 15 nm and 6.5 nm at sampling periods of 40 ms and 800 ms, respectively. This method employs only one free-running femtosecond mode-locked laser and requires no scanning of laser repetition rate, making it easier to operate. Precise measurements of 6 mu m and 0.5 mm step heights have been demonstrated, which show good functionality of this method for measurement of step heights. (c) 2018 Optical Society of America</P>
Lu, Jing Nan,Panchanathan, Radha,Lee, Won Sup,Kim, Hye Jung,Kim, Dong Hoon,Choi, Yung Hyun,Kim, GonSup,Shin, Sung Chul,Hong, Soon Chan Asian Pacific Organization for Cancer Prevention 2017 Asian Pacific journal of cancer prevention Vol.18 No.11
Objective: Anthocyanins belong to a class of flavonoids, exhibiting antioxidant and anti-inflammatory actions have been reported to have anti-cancer effects. Here, we investigated whether anthocyanins can inhibit cancer cell proliferation, invasion, and angiogenesis in human lung cancer A549 cells, which are critically involved in cancer metastasis. Methods: We used anthocyanins from fruits of Vitis coignetiae Pulliat (AIMs) which has been used in Korean folk medicine for the treatment of inflammatory diseases and cancers. We have performed cell proliferation assays, cell invasion assay, gelatin zymography, wound healing assay and western blotting to examine whether anthocyanins can inhibit cancer cell proliferation, invasion, and angiogenesis in A549 cells. Result: AIMs did not inhibit cancer cell proliferation on A549 cells. Also, AIMs suppressed cancer migration, and invasion by supressing MMP-2 and MMP-9 expression. The Immuno-blotting results also revealed that AIMs suppressed the proteins involved in cancer proliferation (COX-2, C-myc, cyclin D1), migration and invasion (MMP-2, MMP-9), anti-apoptosis (XIAP, and c-IAP2), adhesion and angiogenesis (ICAM-1, VEGF). Conclusion: This study demonstrates that the anthocyanins isolated from fruits of Vitis coignetiae Pulliat inhibit cancer proliferation, cancer migration, and invasion that is involve in cancer-metastasis. This study provides evidence that AIMs might have anti-cancer effects on human lung cancer.