Subliminal Channels in the NTRU and the Subliminal-Free Methods

The construetion and destruction of subliminal channel are important problems in the information hiding. The subliminal channel can send secret information without notice. Two subliminal-free methods named weak （strong） subliminal-free on public-key cryptosystem （PKC） are proposed in this paper using the combinatorial method. The first method can only free the subliminal information with any minor probability and the second can free all. Moreover, the ＂traitor problem＂ which is same as the model of the subliminal channel in PKC is given. Two subliminal channels are embedded in N-th degree truncated polynomial ring （NTRU） cryptosystem, and their subliminal-free methods are also be obtained by the action of surveillant.

Chinese emotional words in patients with major depressive disorder during a subliminal Stroop task An event-related potential study

Patients with major depressive disorder （MDD） develop a negative cognitive bias, but how they respond to information in Chinese emotional words is unclear. Here we used a Stroop paradigm with subliminal Chinese emotional words to explore the event-related potential components of abnormal emotional processing Jn patients with MDD. The correct rate was similar in MDD and normal control groups, but MDD reaction time was longer than the normal controls, especially to the negative and neutral stimuli. In N270, repeated-measure analysis of variance demonstrated a significant main effect of the relation electrode and valence on peak amplitude and interactions between valence and electrode site. The peak amplitudes of the three kinds of words were different in the two groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the difference distributed in the frontal and left parietal-temporal sites across the scalp. In N400, there was a significant main effect of the relation electrode and valence on peak amplitude, and the latency showed a main effect of the electrode and an interaction between electrode and group. The amplitudes induced by type of words were significantly different from each other in both groups （positive 〉 negative 〉 neutral）. The topography of the difference waves indicated that the effect of relation type was primarily at left and right frontal and central and left parietal-temporal regions. Both MDD patients and normal controls exhibited significant emotional Stroop effects during the processing of positive/negative Chinese emotional words. MDD patients showed interference in emotional stimuli in early cognitive processing that induced psychological resource intervention during late emotional information processing.

Threshold Subliminal Channel Based on Designated Verifier Signature

The subliminal channel is used to send a secret message to an authorized receiver; the message cannot he discovered by any unauthorized receivers. Designated verifier signature （DVS） provide authentication of a message, we design a DVS scheme with message recovery mechanism and use it as a subliminal channel. In order to share a message among n users securely and allows t or more users can reconstruct the secret in dynamic groups, we combine both subliminal channel and （t, n） threshold cryptography. Then we proposed a threshold subliminal channel which can convey a subliminal message to a group of users based on message-recovery designated verifier signatures. Reconstructing the subliminal message relies on the cooperation of t or more users in the group and they can verify the validity of the subliminal message. Security and performance analysis show that the proposed scheme is secure and efficient.

TWO TYPES OF NEW SUBLIMINAL CHANNELS

Two types of new subliminal channels are constructed respectively based on provable secure public key cryptosystems and identity recognition in some network applications. Research shows that there are some new characteristics which are in favor of covert communication in our constructions. It is hard to make the subliminal channels free, and the channels have large capacity and high transmission efficiency. We also point out that the hardness to make the channels free is disadvantageous to the warden who tries to thwart the covert communication.

SUBLIMINALASSOCIATES

“接下来我们将制作宝马汽车的小册子。”Jonalhan Taylor-Home说道，“我不再想制作唱片封套之类的东西了，其结果往往是耗时六个月，开过20次会议，而且费用有限。”我们碰上了一个健谈的设计代理……

A NOVEL APPROACH OF SECURE COMMUNICATION BASED ON THE TECHNIQUE OF SPEECH INFORMATION HIDING

The proposed secure communication approach adopts the proposed algorithm of Analysis-By- Synthesis （ABS） speech information hiding to establish a Secret Speech Subliminai Channel （SSSC） for speech secure communication over PSTN （Public Switched Telephone Network）, and employs the algorithm of ABS speech information extracting to recovery the secret information, This approach is more reliable, covert and securable than traditional and chaotic secure communication.

The automatic processes of earthquake-related stimulus: Comparison at different time points after the Wenchuan earthquake

Trauma experience not only could predict long-term physical and mental health problems, but also could have impact on the cognitive processes. Modified Stroop task and subliminal masked priming task were used to examine the automatic cognitive processing of earthquake-related stimulus (disaster-related, rescue-related, and earthquake-unrelated words) of healthy undergraduates at one month and two years since the Wenchuan earthquake happened, who came from the worst-hit areas of the Wenchuan earthquake. The results showed that the earthquake interference effects were showed in modified Stroop task and reversed priming effects were found in subliminal masked priming task at one month after the Wenchuan earthquake. However, two years later, earthquake interference effects and reversed priming effects were not found in the same experiments. The results showed the automatic cognitive processing of healthy subjects experienced trauma was affected by the earthquake episodic memory, and these interference effects were weakened with the passage of time.

Kenotomy,the Domain of Creative Thinking

Creativity is designative for the mankind,distinguishing it among the other species.Everyone is born with the affinity to speculate the perceived reality—overlaying it by his own imagination,inventing a playful use for the encountered items and refreshing extant ideas by new approaches,creating new mental outcome.The perceived world is not enough for the human mind,which challenges the given reality,animated by the need for questing and creatively exploring beyond it.As a result,the history of humanity is a history of realized inventions and different visions.If the creativity is an organic part of the human nature,why are so few mature people creative?

Analysis on the Implicit Internet Attitude of the Internet Addicts and the Intervene Problems

Implicit Internet attitude refers to the implicit, automatic psychological tendency of an individual toward the Internet. A study found that Internet addicts held an implicit attitude and positive evaluation toward the Intemet, and this type of evaluations could be effectively changed through subliminal evaluative conditioning technology. An investigation on IAT effect showed the implicit attitude of the Intemet addicts was stable and variable, and AIA （ambivalence of implicit attitudes） might be an integrated perspective to solve the problem.