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Takasaki, Japan

Takasaki City University of Economics is a municipal university in Japan. It is located in Takasaki City, Gunma Prefecture. Wikipedia.

Fujii H.,Tohoku University | Iwata K.,Takasaki City University of Economics | Kaneko S.,Hiroshima University | Managi S.,Tohoku University
Business Strategy and the Environment | Year: 2013

This study examines the relationship between environmental performance and economic performance in Japanese manufacturing firms. The environmental performance indicators include CO2 emissions and the aggregate toxic risk associated with chemical emissions relative to sales. Return on assets (ROA) is used as an indicator of economic performance. We demonstrate that there is a significant inverted U-shaped relationship between ROA and environmental performance calculated by aggregated toxic risk. We also find that the environmental performance increases ROA through both returns on sales and improved capital turnover. However, we observe a significant positive relationship between financial performance and environmental performance based on CO2 emissions. These findings may provide evidence for the consequences of firms' environmental behavior and sustainable development. © 2012 John Wiley & Sons, Ltd and ERP Environment. Source

Pongpiachan S.,National Institute of Development Administration | Iijima A.,Takasaki City University of Economics
Environmental Science and Pollution Research | Year: 2016

Estimating the atmospheric concentrations of PM10-bounded selected metals in urban air is crucial for evaluating adverse health impacts. In the current study, a combination of measurements and multivariate statistical tools was used to investigate the influence of anthropogenic activities on variations in the contents of 18 metals (i.e., Al, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Cd, Sb, Ba, La, Ce and Pb) in ambient air. The concentrations of PM10-bounded metals were measured simultaneously at eight air quality observatory sites during a half-year period at heavily trafficked roads and in urban residential zones in Bangkok, Thailand. Although the daily average concentrations of Al, V, Cr, Mn and Fe were almost equivalent to those of other urban cities around the world, the contents of the majority of the selected metals were much lower than the existing ambient air quality guidelines and standard limit values. The sequence of average values of selected metals followed the order of Al > Fe > Zn > Cu > Pb > Mn > Ba > V > Sb > Ni > As > Cr > Cd > Se > Ce > La > Co > Sc. The probability distribution function (PDF) plots showed sharp symmetrical bell-shaped curves in V and Cr, indicating that crustal emissions are the predominant sources of these two elements in PM10. The comparatively low coefficients of divergence (COD) that were found in the majority of samples highlight that site-specific effects are of minor importance. A principal component analysis (PCA) revealed that 37.74, 13.51 and 11.32 % of the total variances represent crustal emissions, vehicular exhausts and the wear and tear of brakes and tires, respectively. © 2015, Springer-Verlag Berlin Heidelberg. Source

Iwata K.,Takasaki City University of Economics | Katayama H.,Waseda University | Arimura T.H.,Waseda University
Energy for Sustainable Development | Year: 2015

Using a household survey conducted in a suburb of Tokyo, we examine whether individuals properly perceive the benefits of energy-saving actions. A bivariate regression shows that, on average, individuals overestimate the benefits. The tendency to overestimate is robust to controlling for individual and home characteristics. Our results are contrary to those of Attari et al. (2011), who found that individuals in the U.S. tended to underestimate the benefits of energy-saving activities. The difference in our results suggests that the provision of information about the benefits of energy saving may be an effective policy to address global warming issues in one country but not necessarily in all countries. We also find that the magnitude of overestimation is greatest among young single males, whereas the benefits perceived by older married females are the smallest. This result suggests that the provision of tailored information (i.e., highly personalized and specific information) can be an effective intervention even in Japan. © 2014 International Energy Initiative. Source

Three mechanisms are commonly employed to enable households to sell electricity from grid-connected residential solar photovoltaic (PV) systems to utilities or grid companies: feed-in tariffs (FIT), net metering, and net purchase and sale. This study aims to compare these mechanisms with respect to social welfare and to retail electricity rates that include the cost to electric utilities of purchasing residential PV-generated electricity. The study presents a simple microeconomic model that shows, first, that the mechanism that produces the most social welfare is different depending on the amount of reduction in electricity consumption achievable under net metering or net purchase and sale (which are shown to be essentially similar). If the reduction is relatively small, FIT is likely to produce more social welfare than net metering/net purchase and sale; if the reduction is large, the opposite is the case. Second, the model shows that the mechanism that yields the lowest electricity rate is not definite, and differs depending on the homogeneity of households: when households are more homogeneous, the electricity rate under net metering/net purchase and sale is more likely to be higher than that under FIT. © 2012 Elsevier Ltd. Source

Yamamoto Y.,Takasaki City University of Economics
Energy Policy | Year: 2015

According to diffusion theory, opinion leaders play an important role in the diffusion of new technologies through interpersonal communication with potential adopters. This study investigates the role and utility of opinion leadership in photovoltaic (PV) system diffusion. Specifically, the study proposes, examines, and considers the implications of the hypothesis that there is a positive relationship between willingness to pay (WTP) for a PV system and opinion leadership on PV-system adoption. The investigation employed an internet-based questionnaire to assess the use of interpersonal communication in decision-making on adoption, to identify opinion leaders on adoption, and to characterize their WTP. The response pool consisted of 488 individuals who lived in a detached house, owned a residential PV system, and were responsible for making the decision to adopt the system. The results support the hypothesis. Considering that subsidization preferentially incentivizes households with greater WTP to adopt PV systems, this suggests that subsidization is more effective than purchases of PV power under feed-in tariffs in promoting the diffusion of residential PV systems through interpersonal communication. © 2015 Elsevier Ltd. Source

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