As the technology scales down, the single-event transient(SET) has become a great concern for the reliability of integrated circuits(ICs). A novel time redundant flip-flop structure is proposed to detect and correct t...
详细信息
ISBN:
(纸本)9781467397209
As the technology scales down, the single-event transient(SET) has become a great concern for the reliability of integrated circuits(ICs). A novel time redundant flip-flop structure is proposed to detect and correct the SET pulse. The most advantage of this structure is that it has very little setup and hold time overhead and the architecture need not be modified to recover the system. HSPICE simulation is adopted verify the validation of this structure. Finally, we give the use of this flip-flop in the pipeline based architecture.
To solve the problem of long response time when users obtain suitable cutting parameters through the Internet based platform,a case-basedreasoning framework is ***,a Hamming distance and Euclidean distance combined m...
详细信息
To solve the problem of long response time when users obtain suitable cutting parameters through the Internet based platform,a case-basedreasoning framework is ***,a Hamming distance and Euclidean distance combined method is designed to measure the similarity of case features which have both numeric and category *** addition,AHP(Analytic Hierarchy Process)and entropy weight method are integrated to provide features weight,where both user preferences and comprehensive impact of the index have been *** relation analysis is used to obtain the similarity of a new problem and alternative ***,a platform is also developed on Visual Studio 2015,and a case study is demonstrated to verify the practicality and efficiency of the proposed *** method can obtain cutting parameters which is suitable without iterative *** with the traditional PSO(Particle swarm optimization algorithm)and GA(Genetic algorithm),it can obtain fasterresponse *** method can provide ideas for selecting processing parameters in industrial *** guaranteeing the characteristic information is similar,this approach can select processing parameters which is the most appropriate for the production process and a lot of time can be saved.
Few-shot semantic segmentation aims at training a model that can segment novel classes in a query image with only a few densely annotated support *** remains a challenge because of large intra-class variations between...
详细信息
Few-shot semantic segmentation aims at training a model that can segment novel classes in a query image with only a few densely annotated support *** remains a challenge because of large intra-class variations between the support and query *** approaches utilize 4d convolutions to mine semantic correspondence between the support and query ***,they still suffer from heavy computation,sparse correspondence,and large *** propose axial assembled correspondence network(AACNet)to alleviate these *** key point of AACNet is the proposed axial assembled 4d kernel,which constructs the basic block for semantic correspondence encoder(SCE).Furthermore,we propose the deblurring equations to provide more robust correspondence for the aforementioned SCE anddesign a novel fusion module to mix correspondences in a learnable *** on PASCAL-5~i reveal that our AACNet achieves a mean intersection-over-union score of 65.9%for 1-shot segmentation and 70.6%for 5-shot segmentation,surpassing the state-of-the-art method by 5.8%and 5.0%respectively.
As a key piece of equipment in bioethanol production, cooking tank is usually used to ensure the uniformity of liquefaction. In this paper, we propose a novel type of cooking tank to ensure a type of starch slurry flo...
详细信息
As a key piece of equipment in bioethanol production, cooking tank is usually used to ensure the uniformity of liquefaction. In this paper, we propose a novel type of cooking tank to ensure a type of starch slurry flow known as a quasi-plug flow in a large-scale process. In the analyses of flow field, we used computational fl uiddynamics(CFd). To simulate the liquid–solid two-phase flow, we chose a Euler–Euler model based on particle dynamics. We investigated the eff ects of several key structural parameters on the flow field. The results show that for a tank with 12,800 mm in height and 1000 mm in diameter, the optimized inlet tube angle and inlet tube diameterrange from 0° to 45° and 0.125 to 0.15 d(diameter of cooking tank), respectively. We determined the optimum cone mouth diameter at the exit and its distance to the bottom to range from 0.18 to 0.30 d and 0.045 to 0.070 d, respectively. The analysis results suggest that the tank performs well when its aspect ratio ranges from 9.62 to 12.8. Our findings provide a theoretical basis fordesigning and optimizing the cooking tank.
Gas-solid fluidized beds have been widely used in heat transfer processes,and so there have been many studies focused on increasing heat transfer in such *** the present work,a pilot scale cold mode experimental rig w...
详细信息
Gas-solid fluidized beds have been widely used in heat transfer processes,and so there have been many studies focused on increasing heat transfer in such *** the present work,a pilot scale cold mode experimental rig was constructed to assess the effects of hydrodynamics on bed-to-wall heat transfer and to investigate various means of enhancing heat transfer in a dense gas-solid fluidized bed with external solid *** experimental results show that heat transfer in the dense region played a dominant role in total bed-to-wall heat transfer,accounting for more than 88%of the total heat transfer *** transfer could be lowered as a result of solids bypass that occurred because of external solids circulation,but this effect was weakened by the radial mixing of *** heat transfer characteristics identified in this study indicate that a specially designed baffle can be used to enhance bed-to-wall heat *** installing such baffles in the fluidized bed test structure,a 70%increase in the total heat transfer coefficient was obtained.
A 3d porous carbon-manganese oxide(3d-C@MnO) nanocomposite is successfully synthesized via a thermal plasma deposition *** chemical bonds and compositions,phase structures,surface morphologies,*** as-obtained 3d-C@M...
详细信息
A 3d porous carbon-manganese oxide(3d-C@MnO) nanocomposite is successfully synthesized via a thermal plasma deposition *** chemical bonds and compositions,phase structures,surface morphologies,*** as-obtained 3d-C@MnO nanocomposite were characterized by the various equipment,such as X-ray diffractometer,X-ray photoelectron spectroscopy,and electron *** electrochemical performances of the 3d-C@MnO nanocomposite electrode showed a specific capacitance of 780 Fg;at a current density of 2Ag;and a capacitance retention rate of 99% after 5000 charge-discharge cycles at a high current density of 10Ag;.These excellent capacitive performances may be attributed to the encapsulation of MnO nanoparticles by porous carbon sheets in the 3d-C@MnO nanocomposite *** is believed that the carbon-encapsulated MnO nanoparticles can be protected from a volume deformation during the charge adsorption/desorption cycle and can be electrically improved by the encapsulated carbon sheets,resulting in better overall capacitive *** addition,this study also demonstrates the practical applicability by assembling a supercapacitor using the as-obtained 3d-C@MnO nanocomposite to glow a light emitting diode.
In solving many-objective optimization problems(MaO Ps),existing nondominated sorting-based multi-objective evolutionary algorithms suffer from the fast loss of selection *** candidate solutions become nondominateddu...
详细信息
In solving many-objective optimization problems(MaO Ps),existing nondominated sorting-based multi-objective evolutionary algorithms suffer from the fast loss of selection *** candidate solutions become nondominatedduring the evolutionary process,thus leading to the failure of producing offspring toward Pareto-optimal front with *** we find a more effective way to select nondominated solutions andresolve this issue?To answer this critical question,this work proposes to evolve solutions through line complex rather than solution points in Euclidean ***,Plücker coordinates are used to project solution points to line complex composed of position vectors and momentum *** position vectors of the solution points,momentum vectors are used to extend the comparability of nondominated solutions and enhance selection ***,a new distance function designed for high-dimensional space is proposed to replace Euclidean distance as a more effective distancebased *** on them,a novel many-objective evolutionary algorithm(MaOEA)is proposed by integrating a line complex-based environmental selection strategy into the NSGAⅢ*** proposed algorithm is compared with the state of the art on widely used benchmark problems with up to 15 *** results demonstrate its superior competitiveness in solving MaOPs.
The rapid expansion of the global electric vehicle market has driven a growing demand for battery recycling industries. Although significant advancements have been achieved in the recycling of cathode materials from s...
详细信息
Pilot Channel without navigation message modulation is added in next generation GNSS for enhancing the acquisition performance in challenge environment. The pre‐detection integration time of pilot channel is potentia...
详细信息
ISBN:
(纸本)9783642547423
Pilot Channel without navigation message modulation is added in next generation GNSS for enhancing the acquisition performance in challenge environment. The pre‐detection integration time of pilot channel is potential to exceed the bit width, so the receiver could obtain better acquisition sensibility. However, the benefit from pilot channel has not been thoroughly analyzed. The equivalent ideal detector factor is used to compare the performance of different power allocation options of data and pilot channel. The results show that when the data and pilot channel has the same power, the acquisition sensibility is not better than that of traditional signal in normal conditions. The conclusion has significance on the BdS modernized signal design.
To elucidate feasible routes of producing CO from CH 3 and unravel the eff ect of adsorbed O on CH x transformation, the reactivity of CH x ( x = 1-3) with and without the assistance of adsorbed atomic O on Ni(111) wa...
详细信息
To elucidate feasible routes of producing CO from CH 3 and unravel the eff ect of adsorbed O on CH x transformation, the reactivity of CH x ( x = 1-3) with and without the assistance of adsorbed atomic O on Ni(111) was explored using density functional theory calculations. The adsorption energies of CH x ( x = 0-3) were found to be signifi cantly reduced on an O-preadsorbed Ni(111) surface compared to a pure surface. Furthermore, O-assisted one-step dehydrogenation of CH x ( x = 1-3) features energy barriers and thus is diffi cult to proceed. In terms of energy, the direct dissociation of CH 3 is favorable, except for the last CH dehydrogenation, which is energy intensive. Interestingly, in O-assisted two-step CH transformation to CO via CHO intermediate, the barrier is dramatically lowered. The successive dehydrogenations of CH x O ( x = 1-3) were also found to be a route for CO formation. Finally, two possible pathways from CH 3 to CO are proposed:(a) CH 3 → CH 2 → CH → CHO → CO;(b) CH 3 → CH 3 O → CH 2 O → CHO → CO.
暂无评论