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| 1 | Global Robust and Adaptive Output Feedback Dynamic Positioning of Surface Ships显示文摘A constructive method was presented to design a global robust and adaptive output feedback controller for dynamic positioning of surface ships under environmental disturbances induced by waves, wind, and ocean currents. The ship's parameters were not required to be known. An adaptive observer was first designed to estimate the ship's velocities and parameters. The ship position measurements were also passed through the adaptive observer to reduce high frequency measurement noise from entering the control system. Using these estimate signals, the control was then designed based on Lyapunov's direct method to force the ship's position and orientation to globally asymptotically converge to desired values. Simulation results illustrate the effectiveness of the proposed control system. In conclusion, the paper presented a new method to design an effective control system for dynamic positioning of surface ships. | Khac Duc Do | 2011 | Journal of Marine Science and Application2011，10，3： | 10 |
| 2 | Friction characteristics of mechanically exfoliated and CVD-grown single-layer MoS_2显示文摘In this work, the friction characteristics of single-layer MoS_2 prepared with chemical vapor deposition(CVD) at three different temperatures were quantitatively investigated and compared to those of single-layer MoS_2 prepared using mechanical exfoliation. The surface and crystalline qualities of the MoS_2 specimens were characterized using an optical microscope, atomic force microscope(AFM), and Raman spectroscopy. The surfaces of the MoS2 specimens were generally flat and smooth. However, the Raman data showed that the crystalline qualities of CVD-grown single-layer MoS2 at 800 °C and 850 °C were relatively similar to those of mechanically exfoliated MoS2 whereas the crystalline quality of the CVD-grown single-layer MoS_2 at 900 °C was lower. The CVD-grown single-layer MoS_2 exhibited higher friction than mechanically exfoliated single-layer MoS_2, which might be related to the crystalline imperfections in the CVD-grown MoS_2. In addition, the friction of CVD-grown single-layer MoS_2 increased as the CVD growth temperature increased. In terms of tribological properties, 800 °C was the optimal temperature for the CVD process used in this work. Furthermore, it was observed that the friction at the grain boundary was significantly larger than that at the grain, potentially due to defects at the grain boundary. This result indicates that the temperature used during CVD should be optimized considering the grain size to achieve low friction characteristics. The outcomes of this work will be useful for understanding the intrinsic friction characteristics of single-layer MoS2 and elucidating the feasibility of single-layer MoS_2 as protective or lubricant layers for micro- and nano-devices. | Dinh Le Cao KY Bien-Cuong TRAN KHAC Chinh Tam LE Yong Soo KIM Koo-Hyun CHUNG | 2018 | Friction2018，6，4： | 9 |
| 3 | Mitogenomic phylogeny of the Asian colobine genus Trachypithecus with special focus on Trachypithecus phayrei(Blyth, 1847) and description of a new species显示文摘Trachypithecus,which currently contains 20 species divided into four groups,is the most speciose and geographically dispersed genus among Asian colobines.Despite several morphological and molecular studies,however,its evolutionary history and phylogeography remain poorly understood.Phayre’s langur(Trachypithecus phayrei) is one of the most widespread members of the genus,but details on its actual distribution and intraspecific taxonomy are limited and controversial.Thus,to elucidate the evolutionary history of Trachypithecus and to clarify the intraspecific taxonomy and distribution of T.phayrei,we sequenced 41 mitochondrial genomes from georeferenced fecal samples and museum specimens,including two holotypes.Phylogenetic analyses revealed a robustly supported phylogeny of Trachypithecus,suggesting that the T.pileatus group branched first,followed by the T.francoisi group,and the T.cristatus and T.obscurus groups most recently.The four species groups diverged from each other 4.5-3.1 million years ago(Ma),while speciation events within these groups occurred much more recently(1.6-0.3 Ma).Within T.phayrei,we found three clades that diverged 1.0-0.9 Ma,indicating the existence of three rather than two taxa.Following the phylogenetic species concept and based on genetic,morphological,and ecological differences,we elevate the T.phayrei subspecies to species level,describe a new species from central Myanmar,and refine the distribution of the three taxa.Overall,our study highlights the importance of museum specimens and provides new insights not only into the evolutionary history of T.phayrei but the entire Trachypithecus genus as well. | Christian Roos Kristofer MHelgen Roberto Portela Miguez Naw May Lay Thant Ngwe Lwin Aung Ko Lin Aung Lin Khin Mar Yi Paing Soe Zin Mar Hein Margaret Nyein Nyein Myint Tanvir Ahmed Dilip Chetry Melina Urh EGrace Veatch Neil Duncan Pepijn Kamminga Marcus AHChua Lu Yao Christian Matauschek Dirk Meyer Zhi-Jin Liu Ming Li Tilo Nadler Peng-Fei Fan Le Khac Quyet Michael Hofreiter Dietmar Zinner Frank Momberg | 2020 | Zoological Research2020，41，6： | 5 |
| 4 | Effectiveness on post-stroke hemiplegia in patients:electroacupuncture plus cycling vs electroacupuncture alone显示文摘OBJECTIVE:To evaluate the effectiveness of cycling in combination with electroacupuncture in treatment of poststroke hemiplegia patients at National Hospital of Acupuncture,Vietnam.METHODS:The study was designed as a single-centre,outcome-assessor-blinded parallel randomised controlled trial with 120 post-stroke hemiplegia patients randomly assigned into two groups:electroacupuncture plus cycling(CT group) and electroacupuncture(AT group).Patients were assessed before and after the treatment(using muscle grading,modified Rankin,Barthel,Orgorozo scores and electromyography).Statistical Man–Whitney U test,and Fisher’s exact tests were used to compare between CT and AT groups.RESULTS:The results reported statistically significant improvement in motor function in patients suffering from hemiplegia following ischemic stroke in both CT and AT groups.Patients in CT group experienced a greater improvement compared to those in AT group including better muscle contraction(increased frequency and amplitude of electromyography and increased muscle grading scale);increased recovery(Orgogozo scale),increased independency(Barthel scale) and decreased disability(Modified Rankin scale)(P < 0.01).CONCLUSIONS:Combination with cycling training significantly improves the recovery of post-stroke patients treated with electroacupuncture. | Minh Duc Nguyen Thanh Van Tran Quoc Vinh Nguyen Ninh Khac Nguyen Son Truong Vu Luu Trong Nguyen Linh Vu Phuong Dang | 2023 | Journal of Traditional Chinese Medicine2023，43，2： | 2 |
| 5 | Global Inverse Optimal Tracking Control of Underactuated Omni-directional Intelligent Navigators (ODINs)显示文摘这份报纸关于一个有意义的费用函数论述最佳的控制器的一个图案强迫 underactuated 在到磁道的未知经常的环境负担下面的全向的聪明的导航者(最高之神) 在二维的空格的一条引用轨道。由驾驶实践的车辆激发了,当加巨浪的虚拟控制插入了力量,考虑的 yaw 角度被用来强迫车辆的位置全球性追踪它的参考书轨道。控制设计基于为反的最佳的控制和非线性的系统,围住的骚乱观察员的一个新图案,和 backstepping 和 Lyapunovs 直接方法的稳定性分析开发的几最近的结果。州反馈并且产量反馈控制图案被探讨。模拟被包括说明建议结果的有效性。 | Khac Duc Do | 2015 | Journal of Marine Science and Application2015，14，1： | 2 |
| 6 | Ellagiccompounds from Diplopanax stachyanthus 显示文摘 | Khac DD Sung T Campos AM | 1990 | Phytochemistry1990，29，1： | 1 |
| 7 | Effect of alum on nitrifica-tion during simultaneous phosphorous removal in anoxic/oxic reactor显示文摘 | RAJESH B J KHAC U D | 2009 | Biotechnology and Bioprocess Engi-neering2009，14，： | 1 |
| 8 | Study and performance of humidity sensor based on the mechanical-optoetectronic principle for the measurement and control of humidity in storehouses显示文摘 | Nguyen Thi Thu Ha Dao Khac An Phan Viet Phong | 2000 | Sensors and Actuators B2000，66，： | 1 |
| 9 | Antibiotic prophylaxis for the prevention of bacterial infections in cirrhotic patients with gastrointestinal bleeding: a meta-nalysis 显示文摘 | Bernard B Grange JD Khac EN | 1999 | Hepatology1999，29，6： | 1 |
| 10 | Control of Nonlinear Systems with Output Tracking Error Constraints显示文摘A constructive method is presented to design controllers that force the output of nonlinear systems in a strict feedback form to track a bounded and sufficient smooth reference trajectory asymptotically.Under suitable condition with the initial output tracking error,the proposed controllers guarantee the output tracking error within a symmetric or an asymmetric pre-specified limit range,and boundedness of all signals of the closed loop system.A transformation is introduced to take care of the output tracking error constraint.Smooth and/or p-times differentiable step functions are proposed and incorporated in the output tracking error transformation to overcome difficulties due to the asymmetric limit range on the output tracking error.As a result,there are no switchings in the proposed controllers despite of the asymmetric limit range. | Khac Duc Do Dang Binh Nguyen Anh Duc Nguyen | 2010 | Journal of Measurement Science and Instrumentation2010，1，3： | 1 |
| 11 | Ellagic compounds from diplopanax stachyanthus显示文摘 | Khac D D Van S T Marth A | | 0，，01： | 1 |
| 12 | Antibiotic prophylaxis for the prevention of bacterial infections in cirrhotic patients with gastrointestinal bleeding:a meta-analysis显示文摘 | Grange JD Khac EN | 1999 | Hepatology1999，29，： | 1 |
| 13 | Antibiotic prophylylaxis for the prevention of bacterial of infections in cirrhotic patients with gastrointestinal bleeding: a meta-analysis 显示文摘 | Bernard B Grange J D Khac E N | 1999 | Hepatology1999，29，6： | 1 |
| 14 | Nonlinear Control of Magnetic Bearings显示文摘In this paper,recent results controling nonlinear systems with output tracking error constraints are applied to the design of new tracking controllers for magnetic bearings.The proposed controllers can force the rotor to track a bounded and sufficiently smooth reference trajectory asymptotically and guarantee non-contactedness between the rotor and the stator of the magnetic bearings.Simulation results are included to illustrate the effectiveness of the proposed controllers. | Khac Duc Do Dang Hoe Nguyen Thanh Binh Nguyen | 2010 | Journal of Measurement Science and Instrumentation2010，1，1： | 1 |
| 15 | Assess- ment of Asymptomatic Liver Fibrosis in Alcoholic Patients U- sing FibroScan- prospective comparison with seven non -in- vasive laboratory tests 显示文摘 | Nguyen - Khac E Chatelain D Tramier B | 2008 | Aliment Pharmacol Ther2008，28，10： | 1 |
| 16 | Innate mucosal‐associated invariant T ( MAIT ) cells are activated in inflammatory bowel diseases显示文摘 | N.‐E. Serriari M. Eoche L. Lamotte J. Lion M. Fumery P. Marcelo D. Chatelain A. Barre E. Nguyen‐Khac O. Lantz J.‐L. Dupas E. Treiner | 2014 | Clin Exp Immunol2014，，2： | 1 |
| 17 | Long-term temperature evolution in a deep sub-alpine lake, Lake Bourget, France: How a one-dimensional model improves its trend assessment显示文摘 | VIN ON-LEITE B LEMAIRE B J KHAC V T | 2014 | Hydrobiologia2014，731，1： | 1 |
| 18 | Ellagic compounds from Diplopanax stachyanthus 显示文摘 | Khac D D Tran-Van S Campos A M | 1990 | Phytochemistry1990，29，1： | 1 |
| 19 | Distribution of viru- lence genes in Escherichia coli strains isolated from diarrhoeic piglets in the Slovak Republic显示文摘 | VU - KHAC H HOLODA E PIUPCINEC E | 2004 | J Vet Med B Infect Dis Vet Public Health2004，51，7： | 1 |
| 20 | Coupling by slots in rectangular waveguides with arbitrary wall thickness 显示文摘 | VU KHAC T CARSON C T | 1972 | Electronics Letters1972，8，18： | 1 |
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