In recent years, Session Initiation Protocol (SIP) is more and more popular. However, there are many security problems in the Session Initiation Protocol. In 2005, Yang et al. [9] proposed a secure authentication sche...
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In recent years, Session Initiation Protocol (SIP) is more and more popular. However, there are many security problems in the Session Initiation Protocol. In 2005, Yang et al. [9] proposed a secure authentication scheme for Session Initiation Protocol. This authentication scheme is based on Diffie-Hellman [2] concept, so the computation cost of this authentication scheme is very high. In order to improve this shortcoming, Durlanik et al. [3] also proposed an authentication Scheme using eCDH in 2005. However, the computation cost of this authentication scheme is still very high. In this paper, we propose an efficient nonce-based authentication scheme. The computation cost of this authentication scheme is lower than Yang et al.s authentication scheme and Durlanik et al.s authentication scheme, and it is very suitable for low computation power equipment.
One-on-oneeducational computing refers to I student I computing device, which means every student in a group uses a digital learning device. In this paper, we present a model of student question generation called AGQ...
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ISBN:
(纸本)0805857826
One-on-oneeducational computing refers to I student I computing device, which means every student in a group uses a digital learning device. In this paper, we present a model of student question generation called AGQ, which stands for "asking a good question," supported by one-on-oneeducational computing in the classroom settings. AGQ is designed for engaging students in a challenging learning activity that potentially involves higher-level cognitive processing operations. We shall describe the general design of AGQ, called Product evolution, and that the current version is a variation of it.
Activelearningenables learners to actively engage in learning. learning not only transfers material to students for learning, but also encourages greater mental engagement and moreextensive student-student and stud...
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Activelearningenables learners to actively engage in learning. learning not only transfers material to students for learning, but also encourages greater mental engagement and moreextensive student-student and stud...
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Activelearningenables learners to actively engage in learning. learning not only transfers material to students for learning, but also encourages greater mental engagement and moreextensive student-student and student-instructor interaction than does a typical lecture class. Peer instruction (PI) engages students in activelearning by achieving continuous instructor-student interaction in a physics lecture. However, the methodologies and theeffectiveness of implementing PI for elementary school students have seldom been clarified. This study explores the possibility of adopting PI in an elementary science classroom. The research considerations of the study are as follows: (1) how wireless technology can enhance PI in elementary science classroom; (2) how a teacher can engage students in pre-class reading, and (3) whether elementary school students have sufficient social skills to perform a PI discussion? These questions areexamined by observing how the PI pedagogical model worked with a wireless response system in elementary science classroom. Based on the observation, this study also proposes a way of improving the PI learningexperience of elementary school students by adding experiments and observations during peer discussion to explain concepts and phenomena in physics.
explores the peer status, self-concept, perceived peer status, friendship preferences and interpersonal needs of learning disabled and nondisabled children. Comparison of the peer status and personality characteristic...
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explores the peer status, self-concept, perceived peer status, friendship preferences and interpersonal needs of learning disabled and nondisabled children. Comparison of the peer status and personality characteristics of learning disabled and nondisabled children; explanations to the cause of lower social status and self-concept of learning disabled than contrast subjects.
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