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排序方式: 共有399条查询结果,搜索用时 750 毫秒
1.
Asakawa K. Matake S. Hotta Y. Hiraoka T. 《Advanced Packaging, IEEE Transactions on》2006,29(2):211-217
A new type of a flexible printed circuit board with landless vias is developed using a novel method called interconnection via nanoporous structure (INPS). This method can make wires and vias of the printed circuit board simultaneously by a single photo-exposure process. A new photo-induced selective plating method was used to impregnate a nanoporous substrate with copper, and a new photomask was designed, which constitutes of a completely vacant large hole for via and aggregation patterns of very fine holes for wire. Because of the simple process, the INPS board is characterized by landless vias and very fine circuit. Owing to the structure, it is also characterized by flexibility and detachable wires. 相似文献
2.
A novel super-multi-fibre planar lightwave circuit (PLC) connector, designed to connect tens of optical fibres and a PLC for super-multichannel PLC-based optical modules with a receptacle interface, is proposed. This connector employs an angled connection instead of a PC connection. A 0.127 mm pitch 32-fibre connector is also demonstrated, which exhibits low connection and high return losses. 相似文献
3.
4.
The asymptotic correlations among maximum likelihood (ML) and various least squares (LS) estimators in factor analysis are derived. The LS estimators include the unweighted (ULS) and weighted estimators for unstandardized variables and the ULS estimators for standardized variables. The derived formulas cover the cases with restrictions on parameters. Numerical examples with simulations are provided to confirm the accuracy of the formulas and the influence of scales on the asymptotic correlations.
相似文献5.
Saga K. Sugasaka T. Sekiguchi M. Nagata S. Asakawa K. 《Industrial Electronics, IEEE Transactions on》1992,39(6):537-542
A reinforcement learning algorithm based on supervised learning is described. It uses associative search to discover and learn actions that make the system perform a desired task. One problem with associative search is that the system's actions are often inconsistent. In the searching process, the system's actions are always decided stochastically, so the system cannot perform learned actions more than once, even if they have been determined to be suitable actions for the desired task. To solve this problem, a neural network that can predict an evaluation of an action and control the influence of the stochastic element is used. Results from computer simulations using the algorithms to control a mobile robot are described 相似文献
6.
Masahiro Baba Goh Itoh Haruhiko Okumura 《Journal of the Society for Information Display》2007,15(3):205-211
Abstract— In this paper, a software‐processed edge‐ and level‐adaptive overdrive (SELAO) method, which is a novel overdrive technique that utilizes not only a temporal change of gray levels but also a spatial edge intensity of motion pictures, is proposed. The SELAO method is a software video‐processing technology to improve motion‐picture quality rendered on LCDs more than is possible with a conventional SLAO method without edge‐adaptive overdrive, and it works in real time on commonly used personal computers (PCs). 相似文献
7.
Lee Y.-H. Yau L.D. Hansen E. Chau R. Sabi B. Hossaini S. Asakawa B. 《Electron Devices, IEEE Transactions on》1993,40(1):163-168
It is shown that while gate oxides containing thermal/LPCVD composite oxide have lower defect densities than gates using only thermal oxides, they are more susceptible to hot-carrier degradation. The hot-carrier-induced degradation of composite oxides is worse in p-channel MOSFETs than in n-channel MOSFETs. This sensitivity of p-channel MOSFETs is caused by higher electron trapping levels in LPCVD oxides. For 150-Å gate technology, the hot-carrier-degradation resistance of thermal/LPCVD composite gate oxides with a 70-Å or thicker thermal oxide layer approaches that of high-quality pure thermal oxide 相似文献
8.
Tsuyoshi Asakawa Hidefumi Takeda Shigeyoshi Miyagishi Morie Nishida 《Journal of the American Oil Chemists' Society》1986,63(11):1479-1482
The qualitative and quantitative determination of anionic surfactants (sodium and lithium alkylsulfate, sodium dodecylbenzenesulfonate,
sodium di-2-ethylhexyl sulfosuccinate, sodium and lithium perfluoroalkylcarboxylate, and lithium perfluorooctanesulfonate)
were investigated by a capillary tube isotachophoresis using a potential gradient detector. The leading electrolyte solution
was the mixture of acetonitrile and aqueous solution of histidine buffer containing calcium chloride. The terminating electrolyte
solution was the aqueous solution of sodium octanoate. These electrolytes were effective for the analysis of the mixtures
of strongly acidic surfactants. 相似文献
9.
Stochastic resonance (SR) is known as a phenomenon in which the presence of noise helps a nonlinear system in amplifying a
weak (under barrier) signal. In this paper, we investigate how SR behavior can be observed in practical autoassociative neural
networks with the Hopfield-type memory under the stochastic dynamics. We focus on SR responses in two systems which consist
of three and 156 neurons. These cases are considered as effective double-well and multi-well models. It is demonstrated that
the neural network can enhance weak subthreshold signals composed of the stored pattern trains and have higher coherence abilities
between stimulus and response. 相似文献
10.
By means of SR X-ray diffractometry, cooperative Jahn-Teller distortion as a structural phase transformation of the first kind is directly confirmed by a splitting of Laue spots. It is understood that the degenerate ground state of a nonmagnetic doublet (3) of Ho3+ in a cubic Ho-elpasolite, Fm3m(O
h
5
), at least above 600 mK, is lifted up by a distortion below 150 mK, which was predicted by a splitting of the NQR spectrum and anomalies in the specific heat and magnetic susceptibility. This structural transformation shows not only the lowest transition temperature up to now, but also the greatest hysteresis specified by a Schottky-type excitation. The magnitude of the relative distortion (1/1) has been roughly estimated to be on the 2.0 · 10–3 order of magnitude, which is much larger than the predicted value obtained from a point charge approximation. The pecularities of this transition are discussed from the viewpoint that the general theory of a structural transformation, established convincingly at high temperatures could not be easily applied. 相似文献