新しい退職所得戦略に関する研究: 生涯保証便益、意思決定ルール、期間分割

公共政策プログラム / Public Policy Program政策研究大学院大学 / National Graduate Institute for Policy Studies論文審査委員: Wade D. Pfau（主査）, 大山 達雄, Roberto Leon-Gonzalez, Minchung Hsu, 渡辺 和孝（慶應義塾大学

Synthesis and characterization of crystalline iron nanoparticles from zerovalent iron sandwich complexes

In this project we present a systematic study on the synthesis of crystalline iron nanocubes by thermal decomposition of an iron sandwich complex, ( π-C5H5)Fe0(π-C 6H7), in the presence of oleylamine and oleylamine.HCl as surfactants and n-decane as a solvent. The presence of oleylamine.HCl is essential for the reproducible formation of crystalline iron cores.^ Reaction parameters such as temperature, surfactant concentration, effect of counterion, and organoiron reagent structure were investigated in order to obtain iron nanoparticles with uniform size and shape. The nanoparticles, which were characterized by TEM, HRTEM, SAED, and XRD, were determined to have core/shell structures, with the former composed of bcc-Fe and the latter composed of iron oxide (Fe3O4 or Fe2O 3)

Investigation of Small Scale (<50m) Surface Features on Mars' North Polar Cap Using Data from HiRISE

The North Polar Layered Deposits (NPLD) of Mars host a wide array of small scale (<50m) features likely to be formed by aeolian processes. Taking data from the High Resolution Imaging Scientific Experiment (HiRISE), features less than 50 m over the entirety of the NPLD are characterized and mapped. A 2D Fast Fourier Transform is used to infer general spacing and orientation tendencies of surface patterns. Whether these features can be formed by sublimation processes is also tested. Of the 499 HiRISE images extracted, roughly 69% of features are found whose morphology suggest that they are aeolian in origin. Some ripples found align themselves with the local katabatic winds and their changing orientations are likely subjected to katabatic jumps. Sublimation driven features, penitentes, that can form are found to orientate themselves east-west with the tilt pointing towards the equator. However, their modeled size ranges from 10^2 10^3 m

Ensemble and Single Particle Studies of Cation Exchange in CuInS2/ZnS QDs and Their Application in Super-Resolution Imaging

Colloidal quantum dots (QDs) have great potential in many applications such as bioimaging, light emitting diodes, solar cells and lasers. However, a great number of studies have been focused on Cd based (II-VI) and Pb (IV-VI) based materials which are not suitable for mass production. Therefore, alternative types of QD containing less toxic materials have been introduced, including CuInS2 QDs. This I-III-VI semiconductor nanocrystals also attract lots of attention due to their large Stock shift, long fluorescence lifetime and high defect tolerance, making them attractive emitters for applications in bioimaging, photovoltaics and light emitting diodes. In the first project, we synthesized CIS/ZnS QDs using different concentration of Zn precursors. the relationships of structure, elemental composition and photophysics of the QDs were thoroughly investigated. As the concentration of Zn precursor increases up to 4 mmol the emitting centers CIS get smaller and act as dopants in zinc blende ZnS lattices. Concurrent with this transition, subpopulation blinking analysis shows a wide heterogeneity from QD to QD increased. Also, it shows that the on time blinking statistics shift from inverse power law (or multiexponential) to monoexponential behavior. We proposed a model where the different positions of CIS in ZnS is the explanation for the wide heterogeneity in blinking behavior of the QDs. We anticipate these results can be contributed to the design for a large-scale production of the QDs. In the second project, we applied fast blinking CIS/ZnS QDs as fluorescence probes in single particle localization super resolution imaging and compared the resolution of reconstructed images with those using commercial CdSe/ZnS QDs. The results show that even CIS/ZnS QDs obtained less precision in single molecule localization, the resolution in reconstructed images of f-actins was comparable with those using commercial CdSe/ZnS QDs. This project provides some useful insights to demonstrate that Cd-free and fast blinking CIS/ZnS QDs can be used as fluorescence probes for super resolution imaging

Financial Constraint on R&D Activities in Vietnamese Universities – an Empirical Research

R&amp;D is one of the most important roles of universities. Many previous studies examined the impact of financial factor on university R&amp;D activities but reached no consensus view. This article contributes to the current literature by exploring how financial factor and other factors influence R&amp;D activities in Vietnamese universities. The author employed a survey dataset from the Association of Vietnam universities and colleges to check whether unfavourable financial condition hindered university R&amp;D activities. Using structural equation modelling, the author found empirical evidence that financial constraint could hamper R&amp;D productivity. On the other hand, favourable conditions in management, communication, infrastructure and human resources were found to improve R&amp;D activities. This led to some policy suggestions to improve R&amp;D activities in Vietnam higher education institutions

Economic Benefits of Public Services

The article reviews the extensive global empirical evidence on the relative efficiency of the private versus public sectors. The evidence does not support the view that there is any systematic difference in efficiency between public and private sector companies, either in services which are subject to outsourcing, such as waste management, or in sectors privatised by sale, such as telecoms. If the private sector does not have this efficiency advantage, then there is nothing to offset the higher private cost of capital, and it is always likely to be better value to use the public sector. At the macro level, far from being a burden on the economy, growth in public spending as a proportion of the economy has had a persistent positive link with GDP growth for more than a century, in developing countries as well as high income countries. The mechanisms linking public spending and economic growth include investment in, and maintenance of, infrastructure, supporting an educated and healthy workforce, redistributing income to increase the spending power of poorer consumers, providing insurance against risks, direct support for industry - including through technological innovation - and increasing efficiency by taking on these functions. This public sector activity, directly and indirectly, supports half the formal jobs in the world, and has a comparative advantage in delivering public goods such as universal access to healthcare, affordable housing, and protecting the planet from climate change. The need for public services and public spending is expected to grow globally due to continuing economic development, climate change and ageing populations, but, as in the past, this depends on the outcome of political processes

Cloning an RBD-T4-LINKER-C5a sequence encoding the SARS-CoV-2 antigen into a plant expression vector

This study aims to make a plant expression vector with an RBD-T4-Linker-C5a sequence that codes for the SARS-CoV-2 antigen and an A3Dsp signal peptide from the rice 3D amylase gene located before the RBD. Methods of molecular cloning were applied in this study. The plant expression vector pNHL22 harboring the RBD-T4-Linker-C5a sequence was successfully established and conjugated into Agrobacterium tumefaciens LBA4404 by triparental mating. Bacteria A. tumefaciens containing the RBD-T4-Linker-C5a sequence are now ready for genetic transformation into the Nicotiana benthamiana plant for future applications

ОЦЕНКА ОСНОВНЫХ СОСТАВЛЯЮЩИХ ПОГРЕШНОСТИ КАНАЛА ИЗМЕРЕНИЯ СИСТЕМЫ ЭЛЕКТРОМАГНИТНОГО КОНТРОЛЯ СТРУКТУРООБРАЗОВАНИЯ В ПРОКАТЕ

Кратко рассмотрены структура и принцип действия системы электромагнитного контроля структурообразования в прокате. Проведена оценка величины основных составляющих погрешности канала измерения системы. Предложены пути уменьшения результирующей погрешности

Overview and Assessment of the current SME Development Policy and Supporting Industry Promotion Policy in Vietnam

The paper discusses the general background of rise of the Vietnamese small and medium-sized enterprises (SMEs), and the contemporary significance of the Vietnamese supporting industry promotion policy through reviewing existing research papers and published statistics.　Firstly, in the chapter 1, the rise of the private sector with advanced deployment since the Doi Moi1) (Nguyen Thi Tue Anh, 2014) is overviewed in a brief. The following chapter 2 discusses a trend of the Vietnamese SMEs enhancement policy, which includes supporting industry development policy for SMEs. The third chapter summarizes actual situation and some challenges regarding the Vietnamese SMEs supporting policy as well as some policy implication for improvement of the current Vietnamese SME policy implementation