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NATURAL LANGUAGE SEMANTICS PROCESSING-CASE IDENTIFYING BASED ON MEANING RELATION
Bo, Wang Jian,Zhu, Wang Kai,Yue, Ma,Zhou, Zhou Jing 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
Natural language semantics is the key problem in natural language processing. Information used to analyse natural language semantics comes from several sides. We study meaning relation inter text, paragraph and sehtence, and propose a method to determine setence meaning. Basing on them, we implement a news report understanding system. In our system, meaning representation is in semantic network form based on case relation. Depending on meaning relation, a candidate eliminating method to identify case relation is developed. For each nominal chunk (NC), it can play several case roles. These case roles are NC's case candidates in a sentence. Improper case candidates are eliminated and the proper one is choosed as case role in the sentence.
High-Robust Relaxation Oscillator with Frequency Synthesis Feature for FM-UWB Transmitters
Zhou, Bo,Wang, Jingchao The Institute of Electronics and Information Engin 2015 Journal of semiconductor technology and science Vol.15 No.2
A CMOS relaxation oscillator, with high robustness over process, voltage and temperature (PVT) variations, is designed in $0.18{\mu}m$ CMOS. The proposed oscillator, consisting of full-differential charge-discharge timing circuit and switched-capacitor based voltage-to-current conversion, could be expanded to a simple open-loop frequency synthesizer (FS) with output frequency digitally tuned. Experimental results show that the proposed oscillator conducts subcarrier generation for frequency-modulated ultra-wideband (FM-UWB) transmitters with triangular amplitude distortion less than 1%, and achieves frequency deviation less than 8% under PVT and phase noise of -112 dBc/Hz at 1 MHz offset frequency. Under oscillation frequency of 10.5 MHz, the presented design has the relative FS error less than 2% for subcarrier generation and the power dissipation of 0.6 mW from a 1.8 V supply.
Polar Transmitter with Differential DSM Phase and Digital PWM Envelope
Zhou, Bo,Liu, Shuli The Institute of Electronics and Information Engin 2014 Journal of semiconductor technology and science Vol.14 No.3
A low-power low-cost polar transmitter for EDGE is designed in $0.18{\mu}m$ CMOS. A differential delta-sigma modulator (DSM) tunes a three-terminal voltage-controlled oscillator (VCO) to perform RF phase modulation, where the VCO tuning curve is digitally pre-compensated for high linearity and the carrier frequency is calibrated by a dual-mode low-power frequency-locked loop (FLL). A digital intermediate-frequency (IF) pulse-width5 modulator (PWM) drives a complementary power-switch followed by an LC filter to achieve envelope modulation with high efficiency. The proposed transmitter with 9mW power dissipation relaxes the time alignment between the phase and envelope modulations, and achieves an error vector magnitude (EVM) of 4% and phase noise of -123dBc/Hz at 400kHz offset frequency.
A Low-Power Low-Complexity Transmitter for FM-UWB Systems
Zhou, Bo,Wang, Jingchao The Institute of Electronics and Information Engin 2015 Journal of semiconductor technology and science Vol.15 No.2
A frequency modulated ultra-wideband (FM-UWB) transmitter with a high-robust relaxation oscillator for subcarrier generation and a dual-path Ring VCO for RF FM is proposed, featuring low power and low complexity. A prototype 3.65-4.25 GHz FM-UWB transceiver employing the presented transmitter is fabricated in $0.18{\mu}m$ CMOS for short-range wireless data transmission. Experimental results show a bit error rate (BER) of $10^{-6}$ at a data rate of 12.5 kb/s with a communication distance of 60 cm is achieved and the power dissipation of 4.3 mW for the proposed transmitter is observed from a 1.8 V supply.
Zhou Bo,Kim, Jung-Ho,Im, Chae-Chang 한국경영컨설팅학회 2021 경영컨설팅연구 Vol.21 No.2
본 연구는 기업이 사회적 책임 활동이 이익조정에 미치는 영향을 중국의 상장기업을 중심으로 분석하고자 한다. 중국 상하이증권거래소에 상 장된 기업을 중심으로 2011년부터 2016년까지의 표본을 설정하였다. 기업의 사회적 책임활동(CSR)은 중국의 사회적 책임 평가기관인 RKS(Rankings CSR의 CSR 평가 점수를 활용하였으며, 기업의 재무정보 자료는 CSMAR (China StockMarket &Accounting Research Database) 에서 활용하였다. 그리고 기업의 이익조정은 수정 존스 모형의 재량적 발생액의 측정치를 사용하여 실증 분석하였다. 중국의 경우도 한국의 결과와 유사하게 CSR활동은 이익조정에 유의한 음(-)의 영향을 미치는 것으로 나타났다. 즉, 사회적 책임 활동의 대용 치인 RKS지수가 높을수록 이익조정이 감소(-)하는 것으로 나타나 기업의 회계투명성이 높을 것이다. 따라서 회계투명성이 높은 기업일수록 그 기업이 제공하는 회계정보에 대한 유용성과 신뢰도는 높아지므로 그 어느 때보다도 기업의 사회적 책임 활동의 중요성이 커지고 있다. The purpose of this study is to analyze the effect of corporate social responsibility (CSR) contribution activities on the earnings management of Chinese listed companies.We set up a sample of companies listed on the Shanghai Stock Exchange in China from2011 to 2016. The CSR Index is based on the CSR scores evaluated by RKS (Rankings CSR Ratings), a social responsibility assessment agency, and financial data from the CSMAR (China Stock Market & Accounting Research Database) in China. The level of earnings management of the companies was analyzed using the discretionary amount based on a revised Jonesmodel. The results of the study showed that Chinese companies with CSR performance had lower levels of earnings management similar to those of a reported Korean study. As accounting transparencies are higher than corporate’s provided usefulness and credibility of accounting information, CSR activities are becomingmore important nowthan they have ever been.
SETS OF WEAK EXPONENTS OF INDECOMPOSABILITY FOR IRREDUCIBLE BOOLEAN MATRICES
BO, ZHOU,CHO, HAN-HYUK,KIM, SUH-RYUNG Korean Mathematical Society 2005 대한수학회보 Vol.42 No.2
Let $IB_n$ be the set of all irreducible matrices in $B_n$ and let $SIB_n$ be the set of all symmetric matrices in $IB_n$. Finding an upper bound for the set of indices of matrices in $IB_n$ and $SIB_n$ and determining gaps in the set of indices of matrices in $IB_n$ and $SIB_n$ has been studied by many researchers. In this paper, we establish a best upper bound for the set of weak exponents of indecomposability of matrices in $SIB_n\;and\;IB_n$, and show that there does not exist a gap in the set of weak exponents of indecomposability for any of class $SIB_n\;and\;class\;IB_n$.
Sets of Weak Exponents of Indecomposability for Irreducible Boolean Matrices
Zhou Bo,조한혁,김서령 대한수학회 2005 대한수학회보 Vol.42 No.2
Let IB_n be the set of all irreducible matrices in B_nand let SIB_n be the set of all symmetric matrices in IB_n.Finding an upper bound for the set of indices of matrices inIB_n and SIB_n and determining gaps in the set of indices ofmatrices in IB_n and SIB_n has been studied by manyresearchers. In this paper, we establish a best upper bound forthe set of weak exponents of indecomposability of matrices inSIB_n and IB_n, and show that there does not exist a gap inthe set of weak exponents of indecomposability for any of class $SIB_n$ and class $IB_n$.
Bo Zhou,Ming Liu,Chungang Wang 한국강구조학회 2018 International Journal of Steel Structures Vol.18 No.1
This paper presents experimental research and finite element analysis (FEA) on a new type of frame wall that has fiber cement pressure (FCP) panel as sheathing. Some new structural details for the connection and energy conservation are proposed. In order to evaluate the bending capacity of the FCP frame wall, eight specimens with the parameters of stud spacing, connection styles, window opening, and loading sides were tested under uniformly distributed loads. The measurements of each material property were taken before the bending tests. Failure modes, load-deformation curves, and the strain of some key points were all obtained. The results indicate that the designed parameters affected the ultimate bearing capacity and failure mode of the specimens. Moreover, a non-linear FE model was made and verified against the tests. Results of FEA agree well with the experiment in failure modes and load-deformation curves. Therefore, FEA was confirmed as reliable for the prediction of the loading process. Finally, extended parametric analysis of FCP frame wall was conducted.
Zhou, Yongqin,Hu, Bo,Wang, Hang,Jin, Ningzhi,Zhou, Meilan The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.2
In this paper, a flux linkage model based on four magnetization curves fitting is proposed for three-phase 12/8 switched reluctance motor (SRM), with the analysis of the basic principle of flux detection method and function analysis method. In the model, the single value function mapping relationship between position angle and flux is established, which can achieve a direct estimation of rotor position. The realization scheme of SRM indirect position detection system is presented. It is proved by simulation and experiment that the proposed scheme is suitable for rotor position detection of SRM, and has high accuracy of position estimation.