Faculty Profiles - FUJIWARA Takeshi

MISC - FUJIWARA Takeshi

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地域コミュニティの立地要因を考慮したごみ集団回収量のモデリング

三輪拓也, 藤原健史

廃棄物学会研究発表会講演論文集 19th ( Pt.1 ) 2008

Forecasting the Remaining Capacity of Municipal Solid Waste Processing System: An Empirical Taiwan Case Study

Weng Yu-Chi, Fujiwara Takeshi, Matsuoka Yuzuru

Proceedings of the Annual Conference of The Japan Society of Waste Management Experts 19 303 - 303 2008

Language：Japanese Publisher：Japan Society of Material Cycles and Waste Management

Capacity planning of municipal solid waste (MSW) processing system, including the intermediate treatment and disposal facilities, is crucial in MSW management system, especially for the developing countries. Inappropriate intermediate treatment and disposal of MSW would lead to detrimental damage to the public health and natural environment. Moreover, the MSW emission rate in terms of the socioeconomic changes should be further considered in the capacity planning on MSW system. By using the estimation model system of MSW emission, established in the author's previous work, this study aims to conduct a short-term capacity forecasting of MSW processing system, up to 2011. Possible ranges of the available remaining capacity of MSW processing system are projected based on the assumed scenarios. Such capacity forecasting will provide necessary information for the policy decision-makers.

DOI： 10.14912/jswmepac.19.0.303.0

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Statistical model for estimation of household waste emission by composition in Taiwan based on consumption expenditure

WENG YC

Proceedings of the Annual Conference of the Japan Society of Waste Management Experts 18 16 - 18 2007.11

Household waste emission model based on consumption expenditure: a case study in urban area of Shanghai

Proceedings of the Annual Conference of the Japan Society of Waste Management Experts 18 13 - 15 2007.11

Multi-scale analysis on transport and transformation processes of sulfur oxides in Asia

足立進吾, 藤原健史, 松岡譲

Environmental & sanitary engineering research 21 ( 2 ) 10 - 16 2007.6

土木の環境保全の思想について—特集土木に学ぶ環境保全の思想と実例

藤原健史

Argus-eye = アーガス・アイ : JAAF monthly magazine / 会誌編集専門委員会編 45 ( 4 ) 12 - 20 2007.4

セッションB4上水制御(2)

藤原健史, 萩原隆一

EICA 11 ( 4 ) 18 2007.1

Estimating the CO2 Emission from Municipal Solid Waste Treatment System in Taiwan "jointly worked"

Proceeding of The 13th Seminar of JSPS-VCC Core University Program on Urban Environment 13 183 - 192 2007

Development of estimation model for waste generation considering structure of household expenditure "jointly worked" Reviewed

FUJIWARA Takeshi, MATSUOKA Yuzuru, KANAMORI Yuko

Doboku Gakkai Ronbunshuu G 35 471 - 480 2007

Language：Japanese Publisher：Japan Society of Civil Engineers

An estimation model of household's waste which is available for local government to make plans of waste management was developed. The mass of household waste is estimated using household's final consumption expenditure, household's attributes, price of goods, and waste conversion rate. The model is a comprehensive multilayered model representing consumption structure. LES (Linier Expenditure System) model is applied to disaggregate the fmal consumption expenditure to expenditures of major consumption categories, and the multinomial logit model is applied to disaggregate the major consumption expenditure to expenditures of intermediate consumption categories, constant rate is used to disaggregate the intermediate consumption expenditure to the expenditures of small categories, and the expenditure disaggregated finally is converted to the mass of corresponding waste category. This model was applied to estimate the waste generation of Kyoto city using the census of household consumption, as a result, effectiveness of the model was proved through evaluating error in the estimation of kitchen garbage.

DOI： 10.2208/proer.35.471

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Estimating the CO2 Emission from Municipal Solid Waste Treatment System in Taiwan (共著)

Y. Weng, T.Fujiwara, Y.Matsuoka

Proceeding of The 13th Seminar of JSPS-VCC Core University Program on Urban Environment 13 183 - 192 2007

Case Study on Household WasteEmission Model Based on Consumption Expenditure

Jinmei Yang, Takeshi Fujiwara, Yuzuru Matsuoka, Wei Wang

Proceeding of The 13th Seminar of JSPS-MOE Core University Program on Urban Environment 13 293 - 301 2007

Emission Projection of Air Pollutants By Using End-Use Model and Analsis of The Chemical Transport in Asia (共著)

T.Fujiwara, Y.Matsuoka, N.Ohki, S.Goto

Proceeding of The 13th Seminar of JSPS-MOE Core University Program on Urban Environment 13 49 - 58 2007

Analysis of Household Expenditure and Household Waste Generation in Taiwan

Weng Yu-Chi, Fujiwara Takeshi, Matsuokat Yuzuru

Doboku Gakkai Ronbunshuu G 15 117 - 122 2007

Publisher：Japan Society of Civil Engineers

Social, economic and environment is a composite dynamic system."Mass production, and mass consumption, and mass discarded waste" has been a popular phenomenon in modern society, especially in developing countries. Literatures have indicated consumption is a driving factor of environmental loads but only few give quantitative results. In this study, individual's waste generation by waste component category is simulated via simultaneous equation system regarding for the consumption structure by a case study of Taiwan. Firstly, precise estimation models are developed, and analysis results not only identify the household waste generation loads of consumer's behavior explicitly, but also provide an analytic framework to evaluate performance of relevant policies.

DOI： 10.2208/proge.15.117

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Analysis of Household Expenditure and Household Waste Generation in Taiwan

Weng Yu-Chi, Fujiwara Takeshi, Matsuokat Yuzuru

Doboku Gakkai Ronbunshuu G 15 117 - 122 2007

Publisher：Japan Society of Civil Engineers

DOI： 10.2208/proge.15.117

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地球温暖化対策の大気汚染物質削減への副次的効果について

藤原健史

日本機械学会環境工学総合シンポジウム講演論文集 17th 2007

Analysis of Household Expenditure and Household Waste Emission in Taiwan (共著)

Y.Weng, T.Fujiwara, Y.Matsuoka

International Symposium on EcoTopia Science 1 885 - 889 2007

Emission Projection of Air Pollutants By Using End-Use Model and Analsis of The Chemical Transport in Asia "jointly worked"

Proceeding of The 13th Seminar of JSPS-MOE Core University Program on Urban Environment 13 49 - 58 2007

Analysis of transport and chemical transformation processes of acid oxide in Asia in the future

OHKI Nozomu, FUJIWARA Takeshi, MATSUOKA Yuzuru

Doboku Gakkai Ronbunshuu G 15 83 - 88 2007

Publisher：Japan Society of Civil Engineers

In this study, we applied energy end-use model to estimate air pollution emissions by considering the use ofenergy devices which are decided from energy demand. In the second, the total emission with time variation that wasemitted from sectors was disaggregated into the regions of target area, and finally, by using the meso-scale metheorologymodel (MM5) and the chemical transfer model (CMAQ), the chemical transformation and transportation at the presentand in the future were computed in the three different spatial scales. Accuracy in long range transportation of thedeveloped model was validated through comparison between the estimated value and the observation by the East Asian Monitoring Networks.<BR>From the result of finest domain, the background concentration of NO₂ was 2-4 ppb in the year average concen trationand about 19 ppb in the maximum of day average concentration, and the possibility was clarified that NO₂ concentrationin Beijing sometimes is pushed up over Chinese standard of air quality by the NO₂ transported from the outside. Moreover, SO₂ and NOx emissions in 2020 were estimated by the end-use model, and the concentration of the each gasin Beijing was calculated and analyzed. As a result, the concentration in 2020 was over three times higher than that in 2001, and it was specially pointed that SO₂ in winter and NO₂ in summer are remarkably high.

DOI： 10.2208/proge.15.83

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A study on emission estimation of air pollution in Asia

NAGAYAMA Yusuke, GOTOU Shinpei, FUJIWARA Takeshi, MATSUOKA Yuzuru

Doboku Gakkai Ronbunshuu G 15 43 - 48 2007

Publisher：Japan Society of Civil Engineers

In order to clarify the actual conditions of emissions of environmental loads in Asia, we estimated emissions from energy consumption and agriculture in 2001 and developed emissionsinventories with ArcGIS.<BR>To estimate the emissions of NOx, SO₂ and CO₂ from energy consumption, we calculated theservice demands of each sector by using economic model and constructed the energy enduse model. We also estimated the emissions of NOx, SO₂, CO₂, CH₄, NH₃ and N₂O from agriculture in eachemission resource. Then the emissions are spatially distributed by using the landuse data and largepoint source (LPS) data such as electric power plants including its longitude and latitude data.<BR>As a result, we estimated total emissions of NOx, SO₂ and CO₂ are 31.1 (Tg), 29.5 (Tg), 6026.2 (Tg), and the large amount of the emissions is from electric power plants. The results of spatialdistribution of these gases show that these gases have concentrated exhaust source on a specific place. We also estimated emissions of CH₄, NH₃ and N₂O from agriculture are 69.4 (Tg), 15.0 (Tg), 3245.8 (Gg), and the largeamount of these gases is emitted from the north part of India.

DOI： 10.2208/proge.15.43

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Analysis of Household Expenditure and Household Waste Emission in Taiwan "jointly worked"

Y.Weng, T.Fujiwara, Y.Matsuoka

1 885 - 889 2007

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