Using indicator-based assessment, this study examines the energy security of nine Association of Southeast Asian Nations (ASEAN) member countries to see how it has evolved over the past 12 years and identifies a country-specific energy security context for each country. The assessment uses 42 energy security indicators, which can be separated into ...
This study investigates how two existing pan-tropical above-ground biomass (AGB) maps (Saatchi 2011, Baccini 2012) can be combined to derive forest ecosystem specific carbon estimates. Several data-fusion models which combine these AGB maps according to their local correlations with independent datasets such as the spectral bands of SPOT VEGETATION...
Estimation results obtained by parametric models may be seriously misleading when the model is misspecified or poorly approximates the true model. This study proposes a test that jointly tests the specifications of multiple response probabilities in unordered multinomial choice models. The test statistic is asymptotically chi-square distributed, co...
Groundwater is extremely important to all societies. It provides in many places a reliable and ample supply of water for home use, irrigation, and industry. Japanese groundwater policy consists of complex laws and rules. The law governing groundwater nationally is inadequate. The main controversy has been that a river law exists only at a national ...
This paper shows a research paper recommender system for university students. The recommender system is embedded in an e-book system, which displays learning materials (e.g., slides) and is used at lectures. The recommender system suggests papers related to a learning material. The experiment revealed students do not access to recommended papers du...
加藤輝之、永戸久喜、竹見哲也、富田浩文、松林健吾、氏家将志、吉村裕正、「第47回メソ気象研究会・第10回気象庁数値モデル研究会の報告」、『天気 64巻 9号』、日本気象学会、655-660ページ。
Aerogels have many attractive properties but are usually costly and too friable, which always limit their practical applications. Besides, almost all of the reinforced aerogels sacrifice the transparency or superinsulating properties. Here we report unprecedented superflexible polyvinylpolymethylsiloxane ((CH2CH)n(CH3)SiO2/2) aerogels that are faci...
A facile yet versatile approach to transparent, highly flexible, machinable, superinsulating organic-inorganic hybrid aerogels and xerogels is presented. This method involves radical polymerization of a single alkenylalkoxysilane to obtain polyalkenylalkoxysilane, and subsequent hydrolytic polycondensation to afford a homogeneous, doubly cross-link...
Fill factor (FF) is one of the important photovoltaic parameters, which is limited mainly by charge recombination in solar cells. It is still a challenging issue to realize a high FF with a thick active layer, which is required for the development of efficient bulk-heterojunction polymer solar cells. In this study, we discussed how recombination lo...
