k-anonymous Microdata Release via Post Randomisation Method

The problem of the release of anonymized microdata is an important topic in the fields of statistical disclosure control (SDC) and privacy preserving data publishing (PPDP), and yet it remains sufficiently unsolved. In these research fields, k-anonymity has been widely studied as an anonymity notion for mainly deterministic anonymization algorithms, and some probabilistic relaxations have been developed. However, they are not sufficient due to their limitations, i.e., being weaker than the original k-anonymity or requiring strong parametric assumptions. First we propose Pk-anonymity, a new probabilistic k-anonymity, and prove that Pk-anonymity is a mathematical extension of k-anonymity rather than a relaxation. Furthermore, Pk-anonymity requires no parametric assumptions. This property has a significant meaning in the viewpoint that it enables us to compare privacy levels of probabilistic microdata release algorithms with deterministic ones. Second, we apply Pk-anonymity to the post randomization method (PRAM), which is an SDC algorithm based on randomization. PRAM is proven to satisfy Pk-anonymity in a controlled way, i.e, one can control PRAM's parameter so that Pk-anonymity is satisfied. On the other hand, PRAM is also known to satisfy ${\varepsilon}$-differential privacy, a recent popular and strong privacy notion. This fact means that our results significantly enhance PRAM since it implies the satisfaction of both important notions: k-anonymity and ${\varepsilon}$-differential privacy.Comment: 22 pages, 4 figure

Effect of eddy current in shielding plate and electron gun on flux distribution in CRT

The eddy current induced in an inner magnetic shield (IMS) and an electron gun affect the flux distribution of a cathode ray tube, causing a possible degrade of picture quality. In this paper, the effect of the distance between an IMS and a deflection coil on the eddy-current distribution is examined. The eddy current induced in the electron gun, when the coils for velocity modulation (VM) are set near the electron gun, is also analyzed. It is found that the variation of flux distribution is mainly affected by the shape of VM coil.</p

A Flexible Service Rule for the Dynamic Make-to-Stock/Make-to-order Hybrid Production System

AbstractA dynamic MTS/MTO hybrid system combines make-to-stock (MTS) and make-to-order (MTO) operations with MTS dedicated machines and hybrid machines which can be switched between both operations flexibly. The two classes, priority and ordinary demands, and the demand increases by discounting the price of MTS product are assumed. For the dynamic MTS/MTO hybrid system, a flexible service rule with demand prioritization and pricing rules is proposed. The operating cost and the MTO queue length are evaluated by Markov analysis. The results of analysis showed that the system performance could be improved by the proposed rule

Audiovisual semantic congruency effect with onomatopoeia

It has been reported that when a congruent natural sound precedes briefly presented visual stimuli, it promotes performance in psychophysics detection tasks. Onomatopoeias refer to words that phonetically mimic or suggest actual sounds. Onomatopoeic words are a form of sound symbolism and are frequently used in Japanese language. In this study, we examined whether the presentation of spoken Japanese onomatopoeia to Japanese native-speakers results in visual detection sensitivity changes. Results indicate that when onomatopoeias are presented 227 ms before a visual stimulus, they have a modulatory audiovisual effect. This effect is closer to the results observed with natural sounds than spoken words, with d’ being lower for onomatopoeias when compared with natural sounds. Such suggests that Japanese spoken onomatopoeias may be processed in a manner that is closer to natural sounds than spoken words and points to behavioral consequences of sound symbolism

A Flexible Service Rule for the Dynamic Make-to-Stock/Make-to-order Hybrid Production System

AbstractA dynamic MTS/MTO hybrid system combines make-to-stock (MTS) and make-to-order (MTO) operations with MTS dedicated machines and hybrid machines which can be switched between both operations flexibly. The two classes, priority and ordinary demands, and the demand increases by discounting the price of MTS product are assumed. For the dynamic MTS/MTO hybrid system, a flexible service rule with demand prioritization and pricing rules is proposed. The operating cost and the MTO queue length are evaluated by Markov analysis. The results of analysis showed that the system performance could be improved by the proposed rule