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Innovation Height and Firm Performance: An Empirical Analysis from the Community Innovation Survey
ISOGAWA, DAIYA,NISHIKAWA, KOHEI,OHASHI, HIROSHI Korea Development Institute 2015 KDI Journal of Economic Policy (KDI JEP) Vol.37 No.1
This study evaluates the economic impact of product innovation by using firm-level data from the Community Innovation Survey conducted in Japan. It accounts for possible technological spillover from innovation activities and examines the extent to which new-to-market product innovations contribute to firm performance. Econometric analysis using a simultaneous equation model reveals that new-to-market product innovation is likely to increase a firm's sales without cannibalizing those of existing products and generate more technological spillover to other firms. Moreover, such innovation is more likely to emerge from firms collaborating with academic institutions. The paper concludes by discussing policy implications of these findings as well as points to the importance of cross-country comparison between Korea and Japan.
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Innovation Height and Firm Performance: An Empirical Analysis from the Community Innovation Survey
Hiroshi Ohashi,Kohei Nishikawa,Daiya Isogawa 한국개발연구원 2015 KDI Journal of Economic Policy (KDI JEP) Vol.37 No.1
This study evaluates the economic impact of product innovation by using firm-level data from the Community Innovation Survey conducted in Japan. It accounts for possible technological spillover from innovation activities and examines the extent to which new-to-market product innovations contribute to firm performance. Econometric analysis using a simultaneous equation model reveals that new-to-market product innovation is likely to increase a firm’s sales without cannibalizing those of existing products and generate more technological spillover to other firms. Moreover, such innovation is more likely to emerge from firms collaborating with academic institutions. The paper concludes by discussing policy implications of these findings as well as points to the importance of cross-country comparison between Korea and Japan.
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고도산화공법(AOP)에 의한 침출수 중 다이옥신류의 처리
( Jiro Sato ),( Kohei Miki ),( Eiichi Nishikawa ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
본 연구는 자외선 방법(UV/ozone method)에 기반한 오존화로써, AOPs 공법의 일종이며, 실험 결과 침출수 중 다이옥신류의 처리에 효과를 나타내었다. UV/ozone을 이용한 오존의 파괴능 및 오존 파괴율의 영향을 실험하였으며, 다이옥신 제거시 공존유기물질의 농도를 평가하였다. 또한 본 연구의 결과로써 pre-ozonel, 활성탄, UV/ozone 결합 공법의 이용으로 침출수 내 다이옥신을 높은 효율로 제거할 수 있음을 확인하였다. This study focused on the ozonation under UV radiation method (UV/ozone method), which is one of the advanced oxidation process (AOP) methods, and experiments on the effects of treatment of dioxins in leachate were conducted. We have examined the consumptive applications of the ozone used in UV/ozone treatment and the influence of the ozone consumption rate, and evaluated concentration of concomitant organic matter on the dioxin removal. This study also confirmed that the use of pre-ozone, activated carbon, and UV/ozone process in combination can remove dioxins in leachate at a high rate.
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TREATMENT OF DIOXINS IN LEACHATE BY AOP METHOD (UV/OZONE METHOD)
( Jiro Sato ),( Kohei Miki ),( Eiichi Nishikawa ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
This study focused on the ozonation under UV radiation method (UV/ozone method), which is one of the advanced oxidation process (AOP) methods, and experiments on the effects of treatment of dioxins in leachate were conducted. We have examined the consumptive applications of the ozone used in UV/ozone treatment and the influence of the ozone consumption rate, and evaluated concentration of concomitant organic matter on the dioxin removal. This study also confirmed that the use of pre-ozone, activated carbon, and UV/ozone process in combination can remove dioxins in leachate at a high rate.
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( Daisuke Yamada ),( Tomoaki Nishikawa ),( Takuro Yoshikawa ),( Takayuki Kawai ),( Norihiro Kori ),( Mina Kobayashi ),( Masashi Kodan ),( Kohei Seto ),( Kumiko Yamashita ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
A heavy rainfall in July 2018 caused sediment disasters in West Japan. In this disaster, some debris flow were occured on slopes that were not recognized the potential of the occurence of sediment disasters. In this report, based on the results of the sediment disaster emergency survey conducted in several cities in West Japan, we will report the distribution and examples of slopes where these disasters occurred. In addition, regarding the occurrence of debris flow, the features related to topography and weather were examined. In Japan, the hazards of sediment disasters are recognized based on whether the topography of the slope has the same conditions as the topography of sediment disasters that occurred in the past. In this report, we focused on the debris flow occured on the slope that was not recognized as a valley where the debris flow occurs(the valley depth is wider than the valley width). As a result of this survey, we were able to understand the characteristics of the debris flow that occurred at a slope that was not recognized dangerous of sediment disaster. We believe that this report will help improve the warning and evacuation system for future sediment disasters in Japan.
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Uemoto Yoshinobu,Tomaru Tomohisa,Masuda Masahiro,Uchisawa Kota,Hashiba Kenji,Nishikawa Yuki,Suzuki Kohei,Kojima Takatoshi,Suzuki Tomoyuki,Terada Fuminori 아세아·태평양축산학회 2024 Animal Bioscience Vol.37 No.2
Objective: This study aimed to evaluate whether the methane (CH4) to carbon dioxide (CO2) ratio (CH4/CO2) and methane-related traits obtained by the sniffer method can be used as indicators for genetic selection of Holstein cows with lower CH4 emissions. Methods: The sniffer method was used to simultaneously measure the concentrations of CH4 and CO2 during milking in each milking box of the automatic milking system to obtain CH4/CO2. Methane-related traits, which included CH4 emissions, CH4 per energy-corrected milk, methane conversion factor (MCF), and residual CH4, were calculated. First, we investigated the impact of the model with and without body weight (BW) on the lactation stage and parity for predicting methane-related traits using a first on-farm dataset (Farm 1; 400 records for 74 Holstein cows). Second, we estimated the genetic parameters for CH4/CO2 and methane-related traits using a second on-farm dataset (Farm 2; 520 records for 182 Holstein cows). Third, we compared the repeatability and environmental effects on these traits in both farm datasets. Results: The data from Farm 1 revealed that MCF can be reliably evaluated during the lactation stage and parity, even when BW is excluded from the model. Farm 2 data revealed low heritability and moderate repeatability for CH4/CO2 (0.12 and 0.46, respectively) and MCF (0.13 and 0.38, respectively). In addition, the estimated genetic correlation of milk yield with CH4/CO2 was low (0.07) and that with MCF was moderate (–0.53). The on-farm data indicated that CH4/CO2 and MCF could be evaluated consistently during the lactation stage and parity with moderate repeatability on both farms. Conclusion: This study demonstrated the on-farm applicability of the sniffer method for selecting cows with low CH4 emissions.
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