Hiroshima Shudo University is a private university in Hiroshima, Hiroshima, Japan. The predecessor of the school, Hiroshima Domain's Han school, was founded in 1725. It was chartered as a junior college in 1952 and became a four-year college in 1960. The school adopted the present name in 1973. It was announced in March 2013 that Shudo Gakuen, the educational corporation behind the university, would merge in April 2015 with Suzugamine Gakuen, the educational corporation behind Suzugamine Women's College. Wikipedia.
Iwata H.,Fukuoka Institute of Technology |
Okada K.,Hiroshima Shudo University
Environmental Economics and Policy Studies | Year: 2014
Our study empirically investigates the effects of the Kyoto Protocol’s quantified emission limitation or reduction commitments on various greenhouse gas (GHG) emissions such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and other greenhouse gases consisting of hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6). These GHG emissions are considered to be the main source of global warming issues, and 39 countries approved to meet the commitments by ratifying the Kyoto Protocol. Our empirical analysis is based on the Stochastic Impacts by Regression on Population, Affluence, and Technology (STIRPAT) model, the stochastic version of the IPAT model, using the data of 119 countries from 1990 to 2005. Our main findings are that the effects of the commitments to the Kyoto Protocol are (1) significantly negative for the cases of CO2and CH4emissions, (2) not significant for the case of N2O emissions, and (3) significantly positive for the case of other greenhouse gas emissions. These results have important policy implications for global warming issues. © 2012, Springer.
Takahama T.,Hiroshima City University |
Sakai S.,Hiroshima Shudo University
2013 IEEE Congress on Evolutionary Computation, CEC 2013 | Year: 2013
We have proposed to utilize a rough approximation model, which is an approximation model with low accuracy and without learning process, to reduce the number of function evaluations in unconstrained optimization. Although the approximation errors between the true function values and the approximation values estimated by the rough approximation model are not small, the rough model can estimate the order relation of two points with fair accuracy. In order to use this nature of the rough model, we have proposed estimated comparison which omits the function evaluations when the result of the comparison can be judged by approximation values. In this study, we propose to utilize the estimated comparison in constrained optimization and propose the εDEkr, which is the combination of the ε constrained method and the estimated comparison using kernel regression. The εDEkr is a very efficient constrained optimization algorithm that can find high-quality solutions in a very small number of function evaluations. It is shown that the εDEkr can find near optimal solutions stably in a very small number of function evaluations compared with various other methods on well-known nonlinear constrained problems. © 2013 IEEE.
Yue Y.,Columbia University |
Iwasaki K.,Wakayama University |
Chen B.-Y.,National Taiwan University |
Dobashi Y.,Hokkaido University |
Nishita T.,Hiroshima Shudo University
ACM Transactions on Graphics | Year: 2014
We present a technique for computing the shape of a transparent object that can generate user-defined caustic patterns. The surface of the object generated using our method is smooth. Thanks to this property, the resulting caustic pattern is smooth, natural, and highly detailed compared to the results obtained using previous methods. Our method consists of two processes. First, we use a differential geometry approach to compute a smoothmapping between the distributions of the incident light and the light reaching the screen. Second, we utilize this mapping to compute the surface of the object. We solve Poisson's equation to compute both the mapping and the surface of the object. © 2014 ACM.
Lee S.-C.,Meijo University |
Na S.-I.,Hiroshima Shudo University
Sustainability | Year: 2010
The main purpose of this paper is to review and compare E-waste management systems operating in East Asian countries in efforts to identify future challenges facing the circulative economies in the region. The first topic of this paper is cost sharing (physical and financial) as applied to the various stakeholders, including producers, consumers, local governments and recyclers, in the E-waste management systems. The second topic is the environmental and economical impacts of these E-waste management systems on recycling technology, trans-boundary movement of E-wastes and Design for Environment (DfE). The final topic is the possibility for international cooperation in the region in terms of E-waste management systems. The authors' preliminary result is that the E-waste management systems operating in these East Asian countries have contributed to extended producer responsibility and DfE to some extent, but many challenges remain in their improvement through proper cost sharing among the stakeholders. It is also clear that the cross-border transfer of E-wastes cannot be resolved by one nation alone, and thus international cooperation will be indispensable in finding a suitable solution. © 2010 by the authors.
Kawamura K.,Hiroshima Shudo University
Biochimie | Year: 2012
Following the discovery of ribozymes, the "RNA world" hypothesis has become the most accepted hypothesis concerning the origin of life and genetic information. However, this hypothesis has several drawbacks. Verification of the hypothesis from different viewpoints led us to proposals from the viewpoint of the hydrothermal origin of life, solubility of RNA and related biopolymers, and the possibility of creating an evolutionary system comparable to the in vitro selection technique for functional RNA molecules based on molecular biology. © 2011 Elsevier Masson SAS. All rights reserved.