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Light-emitting diode (LED) is a promising semiconductor optoelectronic device, which has small size, long life, environmental protection and many other advantages. Due to its nanosecond time response of luminescence, LED can achieve high-speed modulation of information. Indoor LED lighting source is regarded as communication base station, through high frequency flashing of the lighting source to pass...
The paper is an attempt to discuss the significance of Data Structures Course and raise the difficult points and relevant issues of the course and introduce group cooperation model in teaching the course with the objective to improve the teaching quality of the course and with the conclusion that group cooperation model can stimulate students' interest in the course and enhance the teaching effects...
The 1990s consensus among labor economists is that skill-biased technological change labeled the wide use of computers and IT since late 1970s, lifted up the demand for skilled workers so as to increase the college premium, i.e., wage inequality between different educated groups. However, 1990s consensus is not consistent with the fact that college premium declined in some decades. Challenging the...
Aiming at the security problems of the important disclosed files on Intranet, an intelligent transparent encryption model is proposed. This model can unify policies of rank management security for all hosts on Intranet. Combined with the security assessment process, evaluating secret level of documents in the host, this model decides whether to file for dynamic encryption. Through the practical application...
Even though it is hard to define privacy in ubiquitous computing formally, study of privacy protection is now a spotlight of research to accelerate the emergency of ubiquitous computing age. In this paper, IDs assigned by the authority of end user are picked out from sensitive information such as location, time, likings. Service procedure assert, unless under juristic directive, other ID should be...
In order to make the solution of logic equation set more flexible, this paper establishes the sufficient and necessary conditions for the logic equation set consist of zero-one, non-zero and non-one type logic equations to hold. Moreover, the method of converting the logic equation set into zero-type or one-type equations is given, through which the logic equation set made up of zero-one, non-zero...
The article described the real-time measuring and control subsystem (MCS) of a certain actuation system briefly first. According to the structure and the specific developing requirements for the subsystem, the article gave the software design thinking based on Labview and 1553B communication standard. The article then introduced the design guidelines, software structures and design details specifically...
An ID-based designed-verifier multisignature without trusted PKG is proposed. In proposed scheme, several signers cooperate to sign a single message and no one else than the designed verifier can be convinced by this signature. Since the scheme is based identity, it simplifies the certificate management. It is no need to trust PKG completely, so dishonest PKG can not be free to impersonate a user...
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