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Information Processing in Agriculture 2022年第4期9卷 533-546页

作者： Subha m.Roy C.m.Pareek Rajendra machavaram C.K.mukherjee Agricultural and Food Engineering Department Indian Institute of Technology KharagpurKharagpur 721302West BengalIndia

Artificial aeration system for aquaculture ponds becomes essential to meet the oxygen requirement posed by the aquatic *** performance of an aerator is generally mea-sured in terms of standard aeration efficiency(SAE),which is significantly affected by the different geometric and dynamic parameters of the ***,to enhance the aer-ation performance of an aerator,these parameters need to be *** the present study,a perforated pooled circular stepped cascade(PPCSC)aerator was developed,and the geometric and dynamic parameters of the developed aerator were optimized using the hybrid ANN-PSO technique for maximizing its aeration *** geometric parameters include consecutive step width ratio(W_(i-1)/W_(i))and the perforation diameter to the bottom-most radius ratio(d/R_(b)),whereas the dynamic parameter includes the water flow rate(Q).A 3–6-1 ANN model coupled with particle swarm optimization(PSO)approach was used to obtain the optimum values of geometric and dynamic parameters correspond-ing to the maximum *** optimal values of the consecutive step width ratio(W_(i-1)/W_(i)),the perforation diameter to the bottom-most radius ratio(d/R_(b)),and the water flow rate(Q)for maximizing the SAE were found to be 1.15,0.0027 and 0.0167 m^(3)/s,*** cross-validation results showed a deviation of 3.07%between the predicted and experimen-tal SAE values,thus confirming the adequacy of the proposed hybrid ANN-PSO technique.

关键词： Aquaculture Artificial neural network(ANN) Particle swarm optimization(PSO) Perforated pooled circular stepped cascade(PPCSC)aerator Standard aeration efficiency(SAE)

macrobenthos monitoring in the Gulf of Suez,Egypt

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Acta Oceanologica Sinica 2008年第2期27卷 55-80页

作者： mohamed m.El-Komi National Institute of Oceanography and Fisheries

The biogeography of macrobenthic communities with large-scale differences in species distribution and abundance was studied along the eastern and western coastal regions of the Gulf of Suez to indicate biodiversity of benthos in relation to the prevailing environmental conditions. In general, benthos have a wide variety of species of mainly polychaet worms, crustaceans, bivalves, and other bottom invertebrates living in burrows in/or on the sediment surface. Coastal development clearly affects the ecosystem after the construction of coastal projects. The highest values of benthic diversity, evenness, richness and dominance are found at the Gulf of Suez （WG 1, WG 3）, Ras Gharib （WG 7, WG 8） and Ras Shukier （WG 9a） by contrast to others. The abundance of macrobenthic organsims along the coasts of Gulf of Suez can be arranged in the following sequence： other groups （34%） greater than crustaceans （25%） greater than polychaetes （22%） greater than molluscs （17%） greater than echinoderms （2%）. The biomass of benthic assemblages at different sampling sites can also be ranked as follows： echinoderms （52%） greater than molluscs （27%） greater than crustaceans （16%） greater than polychaetes （2%） greater than other groups （3%）. Some benthic groups or species indicated a distinctive correlation to pollution sources in the marine ecosystem which obviously increased in the coastal areas due to the extension of the coastal development. These activities needed regular information to establish database for the biology and distribution of marine benthic communities. The density and diversity of benthos are significantly affected by eutrophication at Ain Sukhna, whereas the benthos in the open Gulf of Suez do not seem to be adversely affected by pollution.

关键词： macrobenthos assessment impact Gulf of Suez

An Investigation on the Formation of Submerged Bar Under Surges in Sandy Coastal Region

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China Ocean Engineering 2012年第3期26卷 535-546页

作者： mustafa DEmIRCI m.Sami AKZ Civil Engineering Department Engineering FacultyMustafa Kemal UniversityskenderunHatay 31040Turkey Civil Engineering Department Engineering and Architecture Facultyukurova UniversityAdana 01100Turkey

Cross-shore sediment transport rate exposed to waves is very important for coastal morphology, the design of marine structures such as seawalls, jetties, breakwaters etc, and the prevention of coastal erosion and accretion due to onoff shore sediment transportation. In the present study, the experiments on cross-shore sediment transport are carried out in a laboratory wave channel with initial beach slopes of 1/8, 1/10 and 1/15. By using the regular waves with different deep-water wave steepnesses generated by a pedal-type wave generator, the geometrical characteristics of beach profiles under storm conditions and the parameters affecting on-off shore sediment transport are investigated for the beach materials with medium diameters of d50=0.25, 0.32, 0.45, 0.62 and 0.80 mm. The offshore bar geometric characteristics are the horizontal distances from the shoreline to the bar beginning （Xb）, crest （Xt）, and ending （Xs） points, the depth from the bar crest to the still water level （ht）, and the bar volume （Vbar）. The experimental results have indicated that when the deep-water steepness （Ha/L0） increased, the net movement to seaside increased. With the increasing wave steepness, the bars moved to widen herewith the vertical distances from still water level to the bar beginning （Xb）, crest （Xt） and ending （Xs） points and the horizontal distances from the coast line to the bar beginning, crest and ending points increased. It was also shown from experimental results that the horizontal distances from the bar beginning and ending points to the coast line increased with the decrease of the beach slope. The experimental results obtained from this study are compared with previous experimental work and found to be of the same magnitude as the experimental measurements and followed the expected basic trend.

关键词： cross-shore sediment transport beach profiles bar parameters experimental study

Properties of the πh9/2 × vi13/2 Oblate Band in ^188Tl

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Chinese Physics Letters 2006年第7期23卷 1727-1730页

作者：马龙周小红邢烨炳张玉虎郭应祥雷相国谢成营 Oshima m. Toh Y. Koizumi m. Osa A. Hatsukawa Y. Sugawara m. Institute of modern Physics Chinese Academy of Sciences Lanzhou 730000 japan Atomic Energy Research Institute Tokai Ibaraki 319-1195 Japan Chiba Institute of Technology Narashino Chiba 275-0023 Japan

High spin states in ^188Tl have been investigated via the 157Gd（^35Cl,4n） reaction at beam energy of 170 meV. A rotational band built on the πh9/2 × vi13/2 configuration with oblate deformation has been established. Considering the similarity between the band structure observed in odd-odd Tl nuclei, spin values have been tentatively proposed for the new band in ^188Tl. The πh9/2 × vi13/2 oblate band in ^188Tl shows low-spin signature inversion, and it can be interpreted qualitatively by the two quasiparticle plus rotor model including a J-dependent p-n residual interaction.

关键词： πh9/2νi13/2 Oblate 188Tl interpreted qualitatively

Nanotrains and Self-Assembled Two-Dimensional Arrays Built from Carboranes Linked by Hydrogen Bonding of Dipyridones

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Nano Research 2008年第5期1卷 412-419页

作者： Takashi Sasaki Jason m.Guerrero Ashley D.Leonard James m.Tour Department of Chemistry Department of Mechanical Engineering and Materials ScienceRice UniversityMS 2226100 Main St.HoustonTexas 77005USA

The strong hydrogen bonding ability of 2-pyridones were exploited to build nanotrains on *** wheels on axles difunctionalized with 2-pyridone hydrogen bonding units were synthesized and displayed spontaneous formation of linear nanotrains by self-assembly on SiO_(2)or mica *** using atomic force microscopy confi rmed linear formations with lengths up to 5μm and heights within the range of the molecular height of the carborance-tipped axles.

关键词： Nanovehicles nanotrains 2-pyridone hydrogen bonding self-assembly

Heterogeneous transfer functions multi-layer perceptron (mLP) for meteorological time series forecasting

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International Journal of modeling, Simulation, and Scientific Computing 2015年第2期6卷 49-55页

作者： C.Voyant m.L.Nivet CPaoli m.muselli G.Notton University of Corsica SPE CNRS UMR 613420250 CorteFrance University of Galatasaray Computer Engineering Department No:36 34357 Ortak¨oyIstanbulTurkey

In this paper,we propose to study four meteorological and seasonal time series(TS)coupled with a multi-layer perceptron(mLP)*** chose to combine two transfer functions for the nodes of the hidden layer,and to use a temporal indicator(time index as input)in order to take into account the seasonal aspect of the studied *** results of the prediction concern two years of measurements and the learning step,eight independent *** show that this methodology can improve the accuracy of meteorological data estimation compared to a classical mLP modeling with a homogenous transfer function.

关键词： Artificial neural network meteorology time series transfer function

Testing of NAPL simulator to predict migration of a light nonaqueous phase liquid(LNAPL) under water table fluctuation in a sandy medium

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Journal of Central South University 2014年第1期21卷 317-325页

作者：周劲风李雁徐军 m.Kamon School of Environmental Science and Engineering Sun Yat-sen University School of marine Sciences Sun Yat-sen University School of Earth Sciences and Engineering Hohai University Takamatsu National College of Technology

Nanoqueous phase liquid(NAPL) simulator is a powerful and popular mathematical model for modeling the flow and transport of non-aqueous phase liquids in subsurface,but the testing of its feasibility under water table fluctuation has received insufficient *** feature in a column test was tested through two cycles of water table *** sandy medium in the column was initially saturated,and each cycle of water table fluctuation consisted of one water table falling and one rising,resulting in a drainage and an imbibition of the medium,*** was found that the difference between the simulated and measured results in the first drainage of the column test was ***,with the propagation of the water table fluctuations,the simulation errors increased,and the simulation accuracy was not acceptable except for the first drainage in the two fluctuation *** main reason was proved to be the estimation method of residual saturation used in this ***,based on the column tests,it was assumed that the resulting residual saturation from an incomplete imbibition process was a constant,with a value equal to that of the residual value resulting from the main imbibition *** results obtained after modifying NAPL simulator with this assumption were found to be more accurate in the first cycle of water table fluctuation,but this accuracy decreased rapidly in the second *** is concluded that NAPL simulator is not adequate in the case of LNAPL migration under water table fluctuation in sandy medium,unless a feasible assumption to estimate residual saturation is put forward.

关键词： light non-aqueous phase liquid (LNAPL) saturation-capillary pressure relation electrical conductivity probe simulation

Delay Testing Viability of Gate Oxide Short Defects

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Journal of Computer Science & Technology 2005年第2期20卷 195-200页

作者： J.m.Gallière m.Renovell F.Azais Y.Bertrand Laboratoired＇InformatiqueRobotiquemicroèlectroniquedemontpellierLIRmm-UmII UniversitddeMontpellierH：SciencesetTechniquesduLanguedocUMRC5506CNRS-161rueAda34392MontpellierCedex5France

Gate Oxide Short (GOS) defects are becoming predominant as technology is scaling down. Boolean and IDDQ testing of this defect has been widely studied but there is no paper dedicated to delay testing of this defect. So, this paper studies the delay behavior of Gate Oxide Short faults due to pinhole in the gate oxide. The objective of this paper is to give a detailed analysis of the behavior of the GOS defect taking into account the random parameter of the defect such as the GOS resistance and the GOS location. Because an accurate analysis is desired, the bi-dimensional array will be *** a complete analysis is desired, we derive the dynamic characteristic of the GOS as a function of the GOS resistance and location. It is demonstrated that i) GOS has a significant impact on gate delay, ii) GOS located close to the source of the transistor and with small resistance has very high impact.

关键词： VLSI 延迟测试 GOS 集成电路

The Problems of Inaccuracy in Flow Capacity Definition by Using Different Numerical Techniques

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Journal of Thermal Science 2004年第1期13卷 1-7页

作者： I.V.Afanasiev A.V.Granovski A.m.Kareline m.K.Kostege ALSTOm POWER Uniturbo Ltd.13 Kasatkina St. 129301MoscowRussiaALSTOM POWER Uniturbo Ltd.13 Kasatkina St.129301MoscowRussiaALSTOM POWER Uniturbo Ltd.13 Kasatkina St.129301MoscowRussiaALSTOM POWER Uniturbo Ltd.13 Kasatkina St.129301MoscowRussia

The results of numerical analysis of turbine flow capacity and other parameters at different turbine rows are presented in this paper. mass flow calculations by 3D Euler code has been controlled by means of 3D Navier-Stokes code taking into account inlet turbulence intensity and turbulence scale. The use of complicated numerical approaches (3D Euler or 3D Navier-Stokes codes) for mass flow definition demands close attention to quality of numerical techniques. Various reasons of inaccuracy of mass flow definition by using different 3D numerical approaches are analyzed.

关键词： flow capacity computing accuracy 3D Euler code 3D Navier-Stokes code.

Linear Precoder Design for Correlated Rician Fading Channel Under Imperfect CSI

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中国通信:英文版 2023年第9期20卷 160-170页

作者： S.B.m.Priya School of Electrical and Electronics Engineering SASTRA Deemed UniversityThanjavur 613401India

In this paper,we have modeled a linear precoder for indoor multiuser multiple input multiple output(mU-mImO)system with imperfect channel state information(CSI)at *** Rician channel is presumed to be mutually coupled and spatially,temporarily *** imperfection with CSI is primarily due to the channel estimation error at receiver and feedback delay amidst the receiver and transmitter in CSI *** with,the insufficient spacing between the antenna at transmitter and receiver persuades mutual coupling(mC)among the array *** addition,the mImO channel is presumed to be jointly correlated(Weichselberger correlation model).When we look back on the existing precoder design,it considered spatial correlation alone disregarding joint correlation of antenna array *** all above assumption,we have designed a linear precoder which minimizes mean squared error(mSE)subjected to total transmit power constraint for mUmImO *** simulation results proven that proposed precoder shows substantial enhancement in bit error rate(BER)performance in comparison with the existing *** mathematical analysis corroborates the simulation results.

关键词： channel estimation error feedback delay mmSE linear precoder mutual coupling spatial cor-relation Weichselberger correlation model