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The mining industry is one of the biggest industries and has a strong impact in Peru. Despite the mining industry’s importance, it faces labor shortages and environmental risks. For these situations, mining students are important sources of workers not only as labor forces but also as skilled workers who can contribute to solving the environmental issues of mining companies. Thus, the purpose of this paper is to assess Peruvian university mining students’ preferences for labor conditions in mining sites using a discrete choice experiment in order to promote efficient improvements in labor conditions in mining sites that contribute to stable employment and address environmental concerns. The number of respondents was 222 in two Peruvian universities, including males and females aged 16–35 years. The analysis’s findings indicate that labor conditions at mining sites can be optimized by adjusting them to specific individual characteristics of potential mining workers, resulting in a more efficient working environment for companies and workers.
Shuto Mikami; Yutaka Ito; Hernan Gabriel Oyola Gonzales. Assessing Peruvian University Students’ Preferences for Labor Conditions in Mining Site. Sustainability 2021, 13, 9648 .
AMA StyleShuto Mikami, Yutaka Ito, Hernan Gabriel Oyola Gonzales. Assessing Peruvian University Students’ Preferences for Labor Conditions in Mining Site. Sustainability. 2021; 13 (17):9648.
Chicago/Turabian StyleShuto Mikami; Yutaka Ito; Hernan Gabriel Oyola Gonzales. 2021. "Assessing Peruvian University Students’ Preferences for Labor Conditions in Mining Site." Sustainability 13, no. 17: 9648.
World Heritage Sites (WHSs) face several problems, such as increased maintenance costs, difficulties in checking protection conditions, and graffiti destruction by tourists. Hence, constructing a new system that can effectively lighten the burden of maintenance expenditures is necessary. Presently, a new preservation system that leverages Information and Communication Technology, 3D Restoration Technology by photographic data collection, and artificial intelligence and that involves tourists’ participation has been developed. This paper aims to introduce the new preservation system, investigate the possibility of tourists cooperating with the system free of charge, and introduce the details and results of a choice experiment conducted on tourists at Bayon Temple in Cambodia. Analysis results showed that approximately 50% of respondents would be willing to cooperate free of charge, and statistical significance for certain attributes and interactions. The analysis indicated that providing appropriate incentives to tourists who have specific individual characteristics would help promote the use of the preservation system.
Fumiya Kimura; Yutaka Ito; Toshiya Matsui; Hidehiko Shishido; Itaru Kitahara; Youhei Kawamura; Atsuyuki Morishima. Tourist Participation in the Preservation of World Heritage – A Study at Bayon Temple in Cambodia –. Journal of Cultural Heritage 2021, 50, 163 -170.
AMA StyleFumiya Kimura, Yutaka Ito, Toshiya Matsui, Hidehiko Shishido, Itaru Kitahara, Youhei Kawamura, Atsuyuki Morishima. Tourist Participation in the Preservation of World Heritage – A Study at Bayon Temple in Cambodia –. Journal of Cultural Heritage. 2021; 50 ():163-170.
Chicago/Turabian StyleFumiya Kimura; Yutaka Ito; Toshiya Matsui; Hidehiko Shishido; Itaru Kitahara; Youhei Kawamura; Atsuyuki Morishima. 2021. "Tourist Participation in the Preservation of World Heritage – A Study at Bayon Temple in Cambodia –." Journal of Cultural Heritage 50, no. : 163-170.
The mining industry makes up a large portion of the gross domestic product (GDP) in Australia, although securing human resources remains a problem in that field. The aim of this paper is to identify Australian university mining students’ preferences, considering it as potential employees’ preferences, for labour conditions at mining sites by means of a discrete choice experiment to promote efficient improvements in labour conditions in the mining industry. The data of 93 respondents analysed in this paper was collected by survey carried out in two universities in Australia. The result of the study showed that students have preferences on several factors such as wage, fatality rate, working position, commuting style, and company. Students having specific sociodemographic characters were found to show specific preferences on labour conditions. The results of this study indicate the potential average of appropriate monetary compensation for each factor.
Yutaka Ito; Shuto Mikami; Hyongdoo Jang; Abbas Taheri; Kenta Tanaka; Youhei Kawamura. University Students’ Preferences for Labour Conditions at a Mining Site: Evidence from Two Australian Universities. Resources 2020, 9, 29 .
AMA StyleYutaka Ito, Shuto Mikami, Hyongdoo Jang, Abbas Taheri, Kenta Tanaka, Youhei Kawamura. University Students’ Preferences for Labour Conditions at a Mining Site: Evidence from Two Australian Universities. Resources. 2020; 9 (3):29.
Chicago/Turabian StyleYutaka Ito; Shuto Mikami; Hyongdoo Jang; Abbas Taheri; Kenta Tanaka; Youhei Kawamura. 2020. "University Students’ Preferences for Labour Conditions at a Mining Site: Evidence from Two Australian Universities." Resources 9, no. 3: 29.
To assess the dynamics of vegetation growth and phenology in the Inner Mongolia Autonomous Region in China, a time series of Normalized Difference Vegetation Index (NDVI) data from 1983 to 2013, derived from the Advanced Very High-Resolution Radiometer-Vegetation Health Product (AVHRR-VHP), was applied to detect linear trends, seasonal phenology transition dates, and growing seasons. Overall, Inner Mongolia became warmer and drier during the study period. A significant increasing cumulative NDVI trend was found for 30.30% of the total vegetation covered area. The restored area was mainly in the western desert steppe. The degraded area was primarily located in the northeastern meadow and typical steppe regions. However, a severe drought was detected during 1993-2003, when approximately 27.56% of the total vegetation covered area experienced a significant decreasing NDVI trend. The length of the growing season (LOS) during 1983-2013 was shortened due to the delayed start of the growing season (SOS) and advanced timing of the end of the growing season (EOS). However, this trend was reversed during the more recent decade (2003-2013). The phenology was closely associated with climate change, especially precipitation. The variability of vegetation responses to climate change was also assessed, indicating that most types of vegetation had recently recovered and that the restored areas had a varied spatial distribution.
Zhe Gong; Kensuke Kawamura; Naoto Ishikawa; Masakazu Goto; Wulan Tuya; Dalai Alateng; Ting Yin; Yutaka Ito. Vegetation Dynamics and Phenological Shifts in Long-term NDVI Time Series in Inner Mongolia, China. Japan Agricultural Research Quarterly: JARQ 2020, 54, 101 -112.
AMA StyleZhe Gong, Kensuke Kawamura, Naoto Ishikawa, Masakazu Goto, Wulan Tuya, Dalai Alateng, Ting Yin, Yutaka Ito. Vegetation Dynamics and Phenological Shifts in Long-term NDVI Time Series in Inner Mongolia, China. Japan Agricultural Research Quarterly: JARQ. 2020; 54 (1):101-112.
Chicago/Turabian StyleZhe Gong; Kensuke Kawamura; Naoto Ishikawa; Masakazu Goto; Wulan Tuya; Dalai Alateng; Ting Yin; Yutaka Ito. 2020. "Vegetation Dynamics and Phenological Shifts in Long-term NDVI Time Series in Inner Mongolia, China." Japan Agricultural Research Quarterly: JARQ 54, no. 1: 101-112.
The objective of this research was to investigate the current status of water-collection behaviours and their determinants, which are associated with the burden of collecting water. This research was focused on the remote hinterlands of Nepal, and little is known about the residents’ livelihoods; therefore, particular attention was paid to the household burdens in terms of the time devoted to water-collection activities. A survey was conducted in households from mountainous regions of Nepal whose infrastructure is limited in terms of poor water supply and access to electricity. The results of the survey indicated that one or two members of a household were responsible for collecting water, and approximately 40% of households used multiple sites. Moreover, household members visited their collection location approximately 3–4 times per day. Based on the water-collection behaviours of each household member, an average of 148.6 min were used for water-collection activities each day. The factors associated with the total time devoted to water-collection activities include the number of household members, the sex of the household head, the number of years of education of the household members, and the share of children and women engaged in water collection. The estimation results also indicated that members of households with access to water storage spent less time collecting water. The results yield key information from villagers in remote mountainous regions, and substantial improvement is pivotal for achieving universal water access under sustainable development goals.
Satoru Komatsu; Yuki Yamamoto; Yutaka Ito; Shinji Kaneko; Ram Prasad Dhital. Water for life: ceaseless routine efforts for collecting drinking water in remote mountainous villages of Nepal. Environment, Development and Sustainability 2019, 22, 7909 -7925.
AMA StyleSatoru Komatsu, Yuki Yamamoto, Yutaka Ito, Shinji Kaneko, Ram Prasad Dhital. Water for life: ceaseless routine efforts for collecting drinking water in remote mountainous villages of Nepal. Environment, Development and Sustainability. 2019; 22 (8):7909-7925.
Chicago/Turabian StyleSatoru Komatsu; Yuki Yamamoto; Yutaka Ito; Shinji Kaneko; Ram Prasad Dhital. 2019. "Water for life: ceaseless routine efforts for collecting drinking water in remote mountainous villages of Nepal." Environment, Development and Sustainability 22, no. 8: 7909-7925.
In recent years, the pillars of the World Heritage Angkor Thom Bayon temple have become a problem of deterioration due to moss breeding. We aim to generate an image to support observation of moss breeding on a pillar. Even under environment that prevent image processing, we can achieve accurate overlay processing by combining corresponding points between images and 3D shapes. In order to generate the timelapse image of the observation target, many accurate images of different capturing timings are necessary. We are going to use a lot of images collected by crowdsourcing for time lapse images. In this research, we use two crowdsourcing models with the "capturing image of the target region" and the "classification of the captured images" as the micro task. Therefore, image acquisition using crowdsourcing and generation of time lapse image are looped. Time lapse image will be more accurate by repeating this flow.
Hidehiko Shishido; Emi Kawasaki; Yutaka Ito; Youhei Kawamura; Toshiya Matsui; Itaru Kitahara. Time-Lapse Image Generation using Image-Based Modeling by Crowdsourcing. 2018 IEEE International Conference on Big Data (Big Data) 2018, 3541 -3542.
AMA StyleHidehiko Shishido, Emi Kawasaki, Yutaka Ito, Youhei Kawamura, Toshiya Matsui, Itaru Kitahara. Time-Lapse Image Generation using Image-Based Modeling by Crowdsourcing. 2018 IEEE International Conference on Big Data (Big Data). 2018; ():3541-3542.
Chicago/Turabian StyleHidehiko Shishido; Emi Kawasaki; Yutaka Ito; Youhei Kawamura; Toshiya Matsui; Itaru Kitahara. 2018. "Time-Lapse Image Generation using Image-Based Modeling by Crowdsourcing." 2018 IEEE International Conference on Big Data (Big Data) , no. : 3541-3542.
The mountainous hinterland in rural Nepal lacks a fundamental social infrastructure. For example, the lack of electricity causes water provision difficulties, especially in mountainous areas where villagers, especially women and children, often spend a considerable amount of time just conveying water to their homes. To overcome this challenge, a subsidy policy for the installation of a solar-photovoltaic water pumping system (SWPS) has recently been implemented nationwide in Nepal. The Nepali government’s tight financial constraints require that the installation process is both economically and technologically sound. However, the institutional design of the current subsidization policy is price-distortionary and potentially induces the installation of inefficient systems. By collecting original field data from 38 wards in all seven regions of Nepal, this paper measures the SWPS’s technical efficiencies and then identifies relevant economic policies that will enhance the performance of the SWPS. Our results show, inter alia, that a higher dependency on financial support from the government is associated with excessive investment in the SWPS.
Ram P. Dhital; Yutaka Ito; Shinji Kaneko; Satoru Komatsu; Ryota Mihara; Yuichiro Yoshida. Does Institutional Failure Undermine the Physical Design Performance of Solar Water Pumping Systems in Rural Nepal? Sustainability 2016, 8, 770 .
AMA StyleRam P. Dhital, Yutaka Ito, Shinji Kaneko, Satoru Komatsu, Ryota Mihara, Yuichiro Yoshida. Does Institutional Failure Undermine the Physical Design Performance of Solar Water Pumping Systems in Rural Nepal? Sustainability. 2016; 8 (8):770.
Chicago/Turabian StyleRam P. Dhital; Yutaka Ito; Shinji Kaneko; Satoru Komatsu; Ryota Mihara; Yuichiro Yoshida. 2016. "Does Institutional Failure Undermine the Physical Design Performance of Solar Water Pumping Systems in Rural Nepal?" Sustainability 8, no. 8: 770.
The Inner Mongolia grassland, one of the most important grazing regions in China, has long been threatened by land degradation and desertification, mainly due to overgrazing. To understand vegetation responses over the last decade, this study evaluated trends in vegetation cover and phenology dynamics in the Inner Mongolia grassland by applying a normalized difference vegetation index (NDVI) time series obtained by the Terra Moderate Resolution Imaging Spectroradiometer (MODIS) during 2002–2014. The results showed that the cumulative annual NDVI increased to over 77.10 % in the permanent grassland region (2002–2014). The mean value of the total change showed that the start of season (SOS) date and the peak vegetation productivity date of the season (POS) had advanced by 5.79 and 2.43 days, respectively. The end of season (EOS) was delayed by 5.07 days. These changes lengthened the season by 10.86 days. Our results also confirmed that grassland changes are closely related to spring precipitation and increasing temperature at the early growing period because of global warming. Overall, productivity in the Inner Mongolia Autonomous Region tends to increase, but in some grassland areas with grazing, land degradation is ongoing.
Z. Gong; K. Kawamura; N. Ishikawa; M. Goto; T. Wulan; D. Alateng; T. Yin; Y. Ito. MODIS normalized difference vegetation index (NDVI) and vegetation phenology dynamics in the Inner Mongolia grassland. Solid Earth 2015, 6, 1185 -1194.
AMA StyleZ. Gong, K. Kawamura, N. Ishikawa, M. Goto, T. Wulan, D. Alateng, T. Yin, Y. Ito. MODIS normalized difference vegetation index (NDVI) and vegetation phenology dynamics in the Inner Mongolia grassland. Solid Earth. 2015; 6 (4):1185-1194.
Chicago/Turabian StyleZ. Gong; K. Kawamura; N. Ishikawa; M. Goto; T. Wulan; D. Alateng; T. Yin; Y. Ito. 2015. "MODIS normalized difference vegetation index (NDVI) and vegetation phenology dynamics in the Inner Mongolia grassland." Solid Earth 6, no. 4: 1185-1194.
This study investigates the economic validity of the diffusion of fuel cell vehicles (FCVs) and all-electric vehicles (EVs), employing a cost-benefit analysis from the social point of view. This research assumes the amount of NOx and tank-to-wheel CO2 emissions and gasoline use reduction as the benefits and the purchase costs, infrastructure expenses, and maintenance costs of alternative vehicles as the costs of switching internal combustion engine (ICE) vehicles to alternative energy vehicles. In addition, this study conducts a sensitivity analysis considering cost reductions in FCV and EV production and increasing costs for CO2 abatement as well as increasing gasoline prices. In summary, the results show that the diffusion of FCVs is not economically beneficial until 2110, even if the FCV purchase cost decreases to that of an ICE vehicle. EV diffusion might be beneficial by 2060 depending on increases in gasoline prices and CO2 abatement costs.
Yutaka Ito; Shunsuke Managi. The potential of alternative fuel vehicles: A cost-benefit analysis. Research in Transportation Economics 2015, 50, 39 -50.
AMA StyleYutaka Ito, Shunsuke Managi. The potential of alternative fuel vehicles: A cost-benefit analysis. Research in Transportation Economics. 2015; 50 ():39-50.
Chicago/Turabian StyleYutaka Ito; Shunsuke Managi. 2015. "The potential of alternative fuel vehicles: A cost-benefit analysis." Research in Transportation Economics 50, no. : 39-50.
An increasing number of studies analyze the relationship between natural disaster damage and income levels, but they do not consider the distinction between public and private disaster mitigation. This paper empirically distinguishes these two types of mitigation using Japanese prefectural panel data from 1975 to 2007. Our results show that public mitigation rather than private mitigation has contributed to mitigating the total damage resulting from natural disasters. Our estimation of cost-benefit ratios for each prefecture confirms that the mitigation efforts of urban prefectures are less effective than those of rural prefectures in focusing on both large and frequent/small disasters. Hence, urban prefectures need to reassess their public mitigation measures. Furthermore, to lessen the damage resulting from extreme catastrophes, policy makers are required to invest in improved mitigation infrastructures when faced with a high probability of disasters.
Kazuyuki Iwata; Yutaka Ito; Shunsuke Managi. Public and private mitigation for natural disasters in Japan. International Journal of Disaster Risk Reduction 2013, 7, 39 -50.
AMA StyleKazuyuki Iwata, Yutaka Ito, Shunsuke Managi. Public and private mitigation for natural disasters in Japan. International Journal of Disaster Risk Reduction. 2013; 7 ():39-50.
Chicago/Turabian StyleKazuyuki Iwata; Yutaka Ito; Shunsuke Managi. 2013. "Public and private mitigation for natural disasters in Japan." International Journal of Disaster Risk Reduction 7, no. : 39-50.
The socially responsible investment (SRI) funds performances remain inconclusive. Hence, more studies need to be conducted to determine if SRI funds systematically underperform or outperform conventional funds. This paper has employed dynamic mean-variance model using shortage function approach to evaluate the performance of SRI and Environmentally friendly funds (EF). Unlike the traditional methods, this approach estimates fund performance considering both the return and risk at the same time. The empirical results show that SRI funds outperformed conventional funds in EU and US. In addition, the results of EU are among the top-performing categories. EF do not perform as well as SRI, but perform in manners equal or superior to conventional funds. These results show statistically significant in some cases.
Yutaka Ito; Shunsuke Managi; A Matsuda. Performances of socially responsible investment and environmentally friendly funds. Journal of the Operational Research Society 2013, 64, 1583 -1594.
AMA StyleYutaka Ito, Shunsuke Managi, A Matsuda. Performances of socially responsible investment and environmentally friendly funds. Journal of the Operational Research Society. 2013; 64 (11):1583-1594.
Chicago/Turabian StyleYutaka Ito; Shunsuke Managi; A Matsuda. 2013. "Performances of socially responsible investment and environmentally friendly funds." Journal of the Operational Research Society 64, no. 11: 1583-1594.