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We compare public managerial forecasts with internal forecasts collected by a large-scale government survey. Although both forecasts are mandatory, predict corporate investment, and are overoptimistic on average relative to realizations, public forecasts tend to be pessimistic relative to internal forecasts. Managers under more shareholder pressure and with higher pay-performance sensitivity are more publicly pessimistic. The relative pessimism predicts higher stock returns, positive earnings surprises, and more executive compensation. However, managers decrease pessimism when issuing secondary equity offerings and become publicly optimistic when they are financially constrained, consistent with an inter-temporal trade-off between beating managerial targets versus maintaining financial flexibility.

学位の種別: 課程博士, 審査委員会委員 : （主査）東京大学教授 牛田 多加志, 東京大学准教授 齋藤 琢, 東京大学教授 鄭 雄一, 東京大学准教授 小川 純人, 東京大学講師 小笠原 徹

A positively charged polylysine dendrimer generation 3 (LDG3) produced gels by interacting with a negatively charged curdlan sulfate which is a sulfated polysaccharide with high anti-AIDS virus activity. 1H NMR spectra showed a new peak caused by gel formation, which became highest at the ion ratio of 0.75. In addition, when a linear polyornithine (PO) were mixed with curdlan sulfate, gel formation also occurred. In the molar ratio of 0.7, the mixture afforded 100% gel. This result suggests that the action mechanism of curdlan sulfate is attributed to an ionic interaction.

大河内繁男教授追悼号

2010, 【要旨】

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Recent advances in digital and computing technologies have made possible the construction of hardware and software systems that are capable of processing various types of multimedia signals including sound, 2-D and 3-D graphics, images, video and animation. From standalone applications such as digital home photo album and personal music CD that a user can create and edit using software on a personal computer, to systems for digitized document archive and personal portals for employees on an intranet, and on to widely accessible applications found on the Internet such as web search and sports/news information delivery channel, the creation, storage and use of multimedia data in single, centralized and distributed databases have proliferated. In order to encourage both sharing of multimedia content and facilitating the construction of interoperable applications, efforts were put in by international standards-making organizations to develop common coding standards. These efforts had led to standards including AIFF and MP3 [MP3] for audio, JPEG (recently JPEG2000) [JPEG00] for images, and MPEG-2 and MPEG-4 [MPG4-01] for video. ･･･, 2002, Includes bibliographical references

1991, 【要旨】

1990, 【要旨】