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This paper presents a novel watermarking scheme, which is designed for cryptographic data such as keys, cipher-texts, and signatures. Such a cryptographic data is defined carefully based on its mathematical structure in order to provide correctness and security. Thus, in general, cryptographic data has no redundancy and modified data cannot work for intended use. We first show a general solution to...
NEC Microwave Tube, Ltd.(NEMT) has been developed the new DBS bands (17.3 to 18.4 GHz) high power TWT for satellite uplink applications. This DBS band TWT is applied the technology of high power conduction cooled TWTs grown in C band and Ku band. As the features, these TWTs have realized high efficiency (low power consumption) by use of dual stage depressed collector, as well as get a substantial...
Contact of two contours of a pinched object and a robot finger tip, with arbitrary shape, is expressed in terms of differential geometry. The overall finger-object dynamics with rolling and contact constraints is derived as Euler-Lagrange' equation of motion and the first differential equation with curvatures of the contours is derived for updating the length parameters. Despite the complicated mathematical...
We studied the process of information integration through observing pragmatics and dynamics of conversations toward a consensus between two persons. From the pragmatic perspective, the temporal development of pragmatics regarding their consensus was analyzed with conversational analysis and subjective evaluation. From the dynamical perspective, the temporal development of response time of utterance...
This paper considers three-tier hierarchy including a principal who delegates both a design of public work and its verification work, an agent to whom a principal delegates the design work, and an inspector to whom a principal delegates the design verification. This paper includes two types of coalitions; one is that an agent offers a bribe to an inspector to abstain from checking the design drawing,...
The method was proposed for detecting the direction of flow lines in coastal zone aerial photographs. Line integration was used to determine the local direction of the pattern. It was, however, very time consuming to get line integration over the image. The projection theorem was used to solve this problem. The method was successfully applied to an actual aerial photograph.
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