|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Fuzzy Behavior-based Control of Three Wheeled Omnidirectional Mobile Robot显示文摘In this paper, a fuzzy behavior-based approach for a three wheeled omnidirectional mobile robot(TWOMR) navigation has been proposed. The robot has to track either static or dynamic target while avoiding either static or dynamic obstacles along its path. A simple controller design is adopted, and to do so, two fuzzy behaviors 'Track the Target' and 'Avoid Obstacles and Wall Following' are considered based on reduced rule bases(six and five rules respectively). This strategy employs a system of five ultrasonic sensors which provide the necessary information about obstacles in the environment. Simulation platform was designed to demonstrate the effectiveness of the proposed approach. | Nacer Hacene Boubekeur Mendil | 2019 | International Journal of Automation and computing2019，16，2： | 6 |
| 2 | Behavior-based Autonomous Navigation and Formation Control of Mobile Robots in Unknown Cluttered Dynamic Environments with Dynamic Target Tracking显示文摘While different species in nature have safely solved the problem of navigation in a dynamic environment, this remains a challenging task for researchers around the world. The paper addresses the problem of autonomous navigation in an unknown dynamic environment for a single and a group of three wheeled omnidirectional mobile robots(TWOMRs). The robot has to track a dynamic target while avoiding dynamic obstacles and dynamic walls in an unknown and very dense environment. It adopts a behavior-based controller that consists of four behaviors: 'target tracking', 'obstacle avoidance', 'dynamic wall following' and 'avoid robots'. The paper considers the problem of kinematic saturation. In addition, it introduces a strategy for predicting the velocity of dynamic obstacles based on two successive measurements of the ultrasonic sensors to calculate the velocity of the obstacle expressed in the sensor frame. Furthermore, the paper proposes a strategy to deal with dynamic walls even when they have U-like or V-like shapes. The approach can also deal with the formation control of a group of robots based on the leader-follower structure and the behavior-based control, where the robots have to get together and maintain a given formation while navigating toward the target, avoiding obstacles and walls in a dynamic environment. The effectiveness of the proposed approaches is demonstrated via simulation. | Nacer Hacene Boubekeur Mendil | 2021 | International Journal of Automation and computing2021，18，5： | 3 |
| 3 | Lithospheric structure in NW of Africa:Case of the Moroccan Atlas Mountains显示文摘This study presents the outcomes of the local earthquake tomography applied in the Moroccan Atlas domains. A seismic data collected by 36 seismic and a linearized inversion technics are used for determination of local velocity structure.The interpretation of tomography images results emphasizes a new and detailed lithosphere structure: a remaining subducted zone beneath the Souss Basin located from 20-to 45-km depth dipping to the North is detected and interpreted as a body that marks the border between the Moroccan Anti-Atlas and the Meseta-Atlas domains.A subduction zones is detected in the SW of the High Atlas, beneath the Hercynian Tichka massif from 10 to 50-km inclined away from Anti Atlas and in the eastern part of Anti Atlas, dipping northward from Jbel Ougnat at 15e40 km.The junction of the western and middle High Atlas is depicted by two high velocity blocks subducting from 10 to 50 km depth. The first is dipping SW beneath the High Atlas and the second is dipping SE beneath the Ouarzazate Basin.In the northern part of the southwestern High Atlas, a high velocity body dipping towards the north beneath the Essaouira Basin from 15 to 45 km depth.In northeastern part of the High Atlas in the Mougeur zone, a high velocity body is detected from 10 to 45 km depth, dipping to the Se E beneath the eastern High Atlas.The negative lithospheric anomalies found in the upper and in the lower crust are interpreted as a hot asthenospheric material upwelling from deep and gradually replacing the part of crust detached in the High Atlas. The occurrence magmatic activities in these regions testify the existence of a remaining subduction process. This paper argues the implication of these deep structures in the evolution of the Moroccan Atlas Mountain. | Youssef Timoulali Nacer Jabour Youssef Hahou Mimoun Chourak | 2015 | Geodesy and Geodynamics2015，6，6： | 3 |
| 4 | Effects of irrigation and planting geometry on cotton(Gossypium hirsutum L.)fiber quality and seed composition显示文摘Background:Cotton fiber quality and seed composition play vital roles in the economics of cotton production systems and the cottonseed meal industry.This research aimed to examine the effects of different irrigation levels and planting geometries on fiber quality and seed composition of cotton(Gossypium hirsutum L.).We conducted a 2-year study in 2018 and 2019 in a warm,humid area in the Southeast United States on Dundee silt loam soil.There were three irrigation treatments in the study.The treatments included irrigating every furrow,or full irrigation(FI),every alternate furrow,or half irrigation(HI),and no irrigation,or rain-fed(RF).Planting geometries were on ridges spaced 102 cm apart and either a single-row(SR)or twin-rows(TR).Results:The results of high-volume instrument(HVI),advanced fiber information systems(AFIS)and near-infrared reflectance spectroscopy(NIRS)showed that irrigation and planting treatments played a significant role in fiber quality and seed composition.Across irrigation treatments,significant differences were seen in fiber properties,including fineness,maturity ratio,micronaire,neps,short fiber,strength,uniformity,upper half mean length(UHML),upper quartile length by weight(UQLw),and yellowness(+b).Irrigation and planting geometry(PG)had a significant effect on micronaire,strength,and UHML while their interaction was significant only for micronaire.The micronaire was negatively affected by irrigation as FI-SR,FI-TR,HI-SR,and HI-TR recorded 11%~12%lower over the RF-SR and TR treatments.The PG played a minor role in determining fiber quality traits like micronaire and nep count.Irrigation treatments produced significantly lower(3%~4%)protein content than rain-fed,while oil content increased significantly(6%~10%).Conclusions:The study results indicate a potential for improving cotton fiber and seed qualities by managing irrigation and planting geometries in cotton production systems in the Mississippi(MS)Delta region.The HI-TR system appears promising for lint and seed quality. | PINNAMANENI Srinivasa R. ANAPALLI Saseendran S. SUI Ruixiu BELLALOUI Nacer REDDY Krishna N. | 2021 | Journal of Cotton Research2021，4，1： | 2 |
| 5 | Transient Radiative and Conductive Heat Transfer in Non-Gray Semitransparent Two-Dimensional Media with Mixed Boundary Conditions 显示文摘 | David L Nacer B Pascal B | 2006 | Heat Mass Transfer2006，42，32： | 1 |
| 6 | Broadband tissue-equivalent phantom for BAN applications at millimeter wavesm 显示文摘 | Nacer C Maxim Z Ronan S | 2012 | IEEE Transactions on Microwave Theory and Techniques2012，60，7： | 1 |
| 7 | In vestigations on Zn1-xCdx O thin films obtained by spray pyrolysis 显示文摘 | Tabet-Derraz H Benramdance N Nacer D | 2002 | Solar Energy Materials & Solar Cells2002，73，： | 1 |
| 8 | Selection of views to materialize in data warehouze:A hybrid solution显示文摘 | Boukra A Nacer M A Bouroubi S | 2007 | International Journal of Computational Intelligence Research2007，3，4： | 1 |
| 9 | Combination of R207910 with drugs used to treat muhidrug- resistant tuberculosis have the potential to shorten treatment duration 显示文摘 | Nacer Lounis Nicolas Veziris Aurelie Chauffour | 2006 | Antimicrob Agents Chemother2006，50，11： | 1 |
| 10 | Effect of Textured Area on the Performances of a Hydrodynamic Journal Beating 显示文摘 | Tala Ighil Nacer Fillon | 2011 | Tribology International2011，，3： | 1 |
| 11 | Effect of textured area on theperformances of a hydrodynamic journal bearing显示文摘 | Tala-Ighil Nacer Fillon Michel | 2011 | TribologyInternational2011，44，： | 1 |
| 12 | Iron and Mycobacterium tuberculosis infection 显示文摘 | Nacer Lounis Chantal Truffot-Pemot Jacques Grosset | 2001 | Journal of Clinical Virology2001，20，： | 1 |
| 13 | Investigations on ZnxCd1-x O thin films obtained by spray pyrolysis显示文摘 | Tabet D H Benramdance N Nacer D | 2002 | Solar Energy Mater Solar Cells2002，73，3： | 1 |
| 14 | Evaluation of the osteogenic effect of low-level laser therapy (808 nn and 660 nn)on bone defects induced in the femurs of female rats submitted to ovariectomy显示文摘 | R6 Poppi R Da Silva AL Nacer RS | 2011 | Lasers Med Sci2011，26，： | 1 |
| 15 | Detection of rolling bearing defects using discrete wavelet analysis显示文摘 | Abderrazek Djebala Nouredine Ouelaa Nacer Hamzaoui | 2008 | Meeeanica2008，43，： | 1 |
| 16 | Detection of rolling bearing defects using discrete wavelet analysis显示文摘 | ABDENAZK D NOUREDINE O NACER H | 2008 | Meccanica2008，，43： | 1 |
| 17 | Exogenous sodium sulfide improves morphological and physiological re- sponses of a hybrid Populus species to nitrogen dioxide显示文摘 | Hu Yanbo Bellaloui Nacer Sun Guangyu | 2014 | Journal of Plant Physiology2014，171，10： | 1 |
| 18 | Immunobiology of Plasmodium in liver and brain显示文摘 | U. Frevert A. Nacer | 2013 | Parasite Immunol (-)2013，，9： | 1 |
| 19 | Radiative and conductive heat transfer in a nongrey semitransparent medium. Application to fire protection curtains显示文摘 | Nacer Berour David Lacroix Pascal Boulet Gérard Jeandel | 2003 | Journal of Quantitative Spectroscopy and Radiative Transfer2003，，1： | 1 |
| 20 | Transient Radiativeand Conductive Heat Transfer in Non-Gray Semitranspar-ent Two-Dimensional Media With Mixed Boundary Con-ditions 显示文摘 | David L Nacer B Pascal B Gerard J | 2006 | Heat Mass Transfer2006，42，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员