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111.
Bian Jia-Wang Zhan Huangying Wang Naiyan Li Zhichao Zhang Le Shen Chunhua Cheng Ming-Ming Reid Ian 《International Journal of Computer Vision》2021,129(9):2548-2564
International Journal of Computer Vision - We propose a monocular depth estimation method SC-Depth, which requires only unlabelled videos for training and enables the scale-consistent... 相似文献
112.
Applied Intelligence - In the field of supervised learning, the problem of class imbalance is one of the most difficult problems, and has attracted a great deal of research attention in recent... 相似文献
113.
Applied Intelligence - Mining sequential rules from a sequence database usually returns a set of rules with great cardinality. However, in real world applications, the end-users are often... 相似文献
114.
Microsystem Technologies - In this paper, a fuzzy stability control algorithm based on the type-2 sequential fuzzy neural network (T2SFNN) is proposed to suppress the chaotic motion of the MEMS... 相似文献
115.
UAV集电子设备于一身,其最大射频电磁干扰(EMI)源自发动机点火系统,它不同程度地影响着机载计算机、自动驾驶仪等以及不同任务载荷的正常工作;通过对某UAV发动机研制的电容放电式点火系统(CDI)的电路和布局描述,研讨了屏蔽对其二次回路影响的机理,合理确定了工程路径,并研究出一种阻尼-屏蔽法实施在CDI中,降低点火系统EMI近20dB,同时不影响其可靠性;本研究的成功,使长期困扰CDI的EMI深入抑制取得了进步。 相似文献
116.
SimRank has become an important similarity measure to rank web documents based on a graph model on hyperlinks. The existing
approaches for conducting SimRank computation adopt an iteration paradigm. The most efficient deterministic technique yields
O(n3)O\left(n^3\right) worst-case time per iteration with the space requirement O(n2)O\left(n^2\right), where n is the number of nodes (web documents). In this paper, we propose novel optimization techniques such that each iteration
takes O (min{ n ·m , nr })O \left(\min \left\{ n \cdot m , n^r \right\}\right) time and O ( n + m )O \left( n + m \right) space, where m is the number of edges in a web-graph model and r ≤ log2 7. In addition, we extend the similarity transition matrix to prevent random surfers getting stuck, and devise a pruning
technique to eliminate impractical similarities for each iteration. Moreover, we also develop a reordering technique combined
with an over-relaxation method, not only speeding up the convergence rate of the existing techniques, but achieving I/O efficiency
as well. We conduct extensive experiments on both synthetic and real data sets to demonstrate the efficiency and effectiveness
of our iteration techniques. 相似文献
117.
Marina B. Ruiter Lilian J. Beijer Catia Cucchiarini Emiel J. Krahmer Toni C. M. Rietveld Helmer Strik Hugo Van hamme 《Language Resources and Evaluation》2012,46(1):143-151
For some years now, the Nederlandse Taalunie (Dutch Language Union) has been active in promoting the development of human
language technology (HLT) applications for speakers of Dutch with communicative disabilities. The reason is that HLT products
and services may enable them to improve their communication skills and verbal autonomy. We sought to identify a minimum common
set of HLT resources that is required to develop tools for a wide range of communication disabilities. In order to reach this
goal, we investigated the specific needs of communicatively disabled people and related these needs to the underlying HLT
software components. By analysing the availability and quality of these essential HLT resources, we were able to identify
which of the crucial elements need further research and development to become usable for developing applications for communicatively
disabled speakers of Dutch. The results obtained in the current survey can be used to inform policy institutions on how they
can stimulate the development of HLT resources for this target group. In the current survey results were obtained for Dutch,
but a similar approach can also be applied to other languages. 相似文献
118.
Hong-Soek Park Ngoc-Tran Le 《International Journal of Control, Automation and Systems》2012,10(6):1204-1214
Virtual simulation of the real behaviour of mobile harbour crane (MHC) without using the traditional build-and-test method is an imperative approach to the design stage that can increase the quality of the product by reducing manufacturing cost and errors. This paper introduces an engineering model that describes the mechanical behaviour of MHC, and the control design for increasing the position accuracy. Based on a concept of the MHC, a virtual mechanical model was created using SOLIDWOKS, which was then exported to the Automatic Dynamic Analysis of Mechanical System (ADAMS) environment. This model was simulated to investigate the dynamic behaviour of the MHC system. In addition, an adaptive siding mode PID controller was also developed in MATLAB/Simulink to control the crane trolley position and suppress the swing angle of the load. This co-simulation demonstrates the reliability of the mechanical and control functionalities of the developed system. 相似文献
119.
The decay rate of critical fluctuations in steam and in a steam-NaCl mixture has been investigated experimentally with the aid of photon correlation spectroscopy. For pure steam, the measurements have been performed along seven isochores [(¦–
c¦)/c<0.09] as a function of the temperatureT for (T–Tt)<1 K. The results have been compared with the values predicted by the renormalization-group theory written as a modification of the classical mode coupling theory. The agreement between experiment and theory is satisfactory along the critical isochore, but larger deviations are noted for
c when approching the transition temperatureT
t. The decay rate of a 0.1% (molar) dilute mixture of NaCl in H2O has been measured along some near-critical isochores as a function of temperature. Its behavior, which is very different from that observed for pure steam, is dicussed.Paper presented at the Tenth Symposium on Thermophysical Properties, June 20–23, 1988, Gaithersburg, Maryland, U.S.A. 相似文献
120.
The spectra of the optical absorption coefficient in low absorption region are obtained by using a normalization procedure
for the photoconductivity spectra. The results are explained in terms of the optical transition of electrons from localized
states in the exponential valence band tail and in dangling bond states 1.0 eV below the conduction band edge to extended
conduction band states. Then the density of the gap states below the Fermi levelE
F
is obtained. From the investigation of recombination kinetics, the average density of the gap states over the range of
) and the density of the gap states above the Fermi levelE
F
are obtained. These indicate that the width of the conduction band tail is smaller than that of the valence band tail. 相似文献