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This paper proposes the use of a formal grammar for the verification of mathematical formulae for a practical mathematical
OCR system. Like a C compiler detecting syntax errors in a source file, we want to have a verification mechanism to find errors
in the output of mathematical OCR. A linear monadic context-free tree grammar (LM-CFTG) is employed as a formal framework
to define “well-formed” mathematical formulae. A cubic time parsing algorithm for LM-CFTGs is presented. For the purpose of
practical evaluation, a verification system for mathematical OCR is developed, and the effectiveness of the system is demonstrated
by using the ground-truthed mathematical document database InftyCDB-1 and a misrecognition database newly constructed for
this study. 相似文献
44.
Tae-Ho Kim Masakazu Saito Masaya Matsuoka Shinya Tsukada Kiyohisa Wada Masakazu Anpo 《Research on Chemical Intermediates》2010,36(5):453-461
It was found that the photoelectrochemical performance and photocatalytic activity of rod-type TiO2 electrodes were affected by various post-calcination treatments, for example, calcination in NH3 or under vacuum. Post-calcination treatment in NH3 at 773 K was particularly effective in increasing the photoelectrochemical performance and photocatalytic activity of rod-type
TiO2 electrodes. A unique photoelectrochemical circuit was constructed by connecting a rod-type TiO2 electrode to a Pt electrode through a silicon solar cell in which the negative bias was applied on the rod-type TiO2 electrode. It was found that the photoelectrochemical circuit can effectively oxidize ethanethiol in water into CO2. 相似文献
45.
Kenji Kashima Masakazu Kato Jun-ichi Imura Kazuyuki Aihara 《The European physical journal. Special topics》2014,223(12):2493-2501
We propose a novel framework for probabilistic evaluation of interconnectable capacity for wind power generation. This is based on mathematical modeling of load frequency control systems, which captures their nonlinear (saturation and rate limiting) dynamical characteristics, and stochastic uncertainty of wind power output deviation. The method called stochastic linearization is used to analyze resulting power quality. The effectiveness of the proposed method is examined by numerical simulation. 相似文献
46.
Masakazu Teragaito 《Proceedings of the American Mathematical Society》2002,130(9):2803-2808
For a hyperbolic knot in , a toroidal surgery is Dehn surgery which yields a -manifold containing an incompressible torus. It is known that a toroidal surgery on is an integer or a half-integer. In this paper, we prove that all integers occur among the toroidal slopes of hyperbolic knots with bridge index at most three and tunnel number one.
47.
Ohkita M Kawano M Suzuki T Tsuji T 《Chemical communications (Cambridge, England)》2002,(24):3054-3055
The crystallization of 2,4,6-triethynyl-1,3,5-triazine (2) leads to a pi-stacked layered structure of a C(sp)-H...N hydrogen-bonded unique hexagonal network structure, which may be regarded as a supramolecular analogue of a hitherto unknown graphyne network: in-plane intermolecular interactions are short and linear H...N contacts (2.31 and 2.34 A) and the interlayer separation is 3.23 A. 相似文献
48.
Fumihiko Yamaguchi Masakazu Nakanishi 《International Journal of Theoretical Physics》1996,35(10):2107-2116
Linear logic, introduced by Girardet al., has a great power of expression, but no method for induction. This paper proposes a method of induction using knowledge
represented by linear logical formulas. In linear logic, the number of propositions is controlled by logical operators. When
a background theory and a hypothesis prove an example, the number of propositions on each side must be equivalent. 相似文献
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André G. Pernet Hiromasa Nakamoto Naoyasu Ishizuka Masakazu Aburatani Kazuaki Nakahashi Keiji Sakamoto Tadashi Takeuchi 《Tetrahedron letters》1979,20(41):3933-3936
A simplified methodology for the building of prostaglandins substituted at the 10 and 11 positions is presented. 相似文献