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Because of the challenge of collecting labelled training data, zero-shot learning (ZSL) which transfers semantic knowledge represented by category attributes from seen classes to recognize unseen classes has received a lot of attention recently. Existing methods assume that the source attributes are completely correct in zero-shot learning. However, the source attributes in practice may contain noise...
To encourage the continuity of the target scene, a novel sparse representation (SR)-based inverse synthetic aperture radar (ISAR) imaging algorithm is proposed by leveraging the Markov random fields (MRF). The ISAR imaging problem is reformulated in a Bayesian framework where correlated priors are used for the hidden variables to enforce the continuity of target scene. To further enforce the nonzero...
In order to obtain the development and change of teachers' levels of reflection in teachers' online community of practice (TOCP), content analysis, video case analysis and statistical analysis methods were adopted to study 120 teachers (40 novice teachers, 40 key teachers, and 40 experienced teachers) from eight participating schools during three phases in one academic year. The development and change...
Inverse Synthetic Aperture Radar (ISAR) imaging based on sparse representation (SR) is well known for its advantages of achieving high resolution with limited measurements. This paper extends the SR based ISAR imaging to further include the continuity structures of the target scene. After range compression, two kinds of structured sparse recovery methods are performed in each range cell to encourage...
The aim of this paper is to estimate muscle fatigue by using wavelet analysis method in SEMG signal analysis. A signal acquisition system is designed and forearm muscle fatigue experiments under static and dynamic contractions are performed. The wavelet analysis method is proposed to group the wavelet coefficients of SEMG signal into high frequency-band (100Hz-350Hz) and low frequency-band (13-22Hz)...
With the large scale application of integrated circuit in the chaotic encryption, the design of cryptogram program based on the chaotic system becomes a new trend of cryptography. The digital degradation after the chaotic digitization is a key issue to be resolved, while current study pays more attention to digital chaotic period behavior, but the other characteristics of digital chaotic also plays...
This study focuses on the investigation of the relationship between tenure of top management teams (TMTs) and corporate performance. 73 Chinese listed real estate companies are selected as our samples, and hierarchical regression statistical methods are used to analyze the collected data. Then we conclude that: (a) TMTs' average tenure is negatively related to short-term firm performance. But it is...
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