中文版

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Hwa-Lung Yu


Associate Professor
Dept of Bioenvironmental Systems Engineering
National Taiwan University
Taipei, 10617, Taiwan

Office: +886-2-3366-3454

Fax: +886-2-2363-5854

 

Email: hlyu@ntu.edu.tw

Spatiotemporal Environmental InforMatics Laboratory (STEMLAB), director

 

對STEMLAB有興趣之研究生、大學專題生以及博士後研究員，歡迎您的加入，有興趣者歡迎直接與老師聯絡

急徵研究助理

 

Education

Major: Environmental Modeling       Minor: Statistics

Thesis: “Development and Implementation of Knowledge Synthesis Methods for Stochastic

               Natural Systems”

Thesis: "Applied Random Walk Method and Stochastic Analysis to Solute Transport"

Awards

Research Interests

Research Facility

Academic services

Editorial Advisory Board

 

 

Referee:

 

 

Conference organizer:

 

Publications

Book:

 

 

Papers in Refereed Scientific Journals:

 

1.        Yu H-L, C-H Yang, L-C Chien. 2013. “Spatial vulnerability under extreme events: a case of Asian dust storm's effects on children's respiratory health”. Environmental International. Accepted.

 

2.        Yu H-L, C-H Wang. 2013. “Quantile-Based Bayesian Maximum Entropy Approach for Spatiotemporal Modeling of Ambient Air Quality Levels”. Environmental Science & Technology. In press.

 

3.        Yu H-L, Y-C Lin, B. Sivakumar, Y-M Kuo. 2013. A study of the temporal dynamics of ambient particulate matter using stochastic and chaotic techniques. Atmospheric Environment. In press.

 

4.        Yu H-L, L-C Chien, C-H Yang. 2012. “Asian dust storm elevates children's respiratory health risks: a spatiotemporal analysis of children's clinic visits across Taipei (Taiwan)”. PLoS ONE. Accepted. (Impact factor: 4.411; Rank 12nd/86 in Biology in 2011)

 

5.        Chien L-C, C-H Yang, and H-L Yu*. 2012. Effects of Asian dust storm on spatiotemporal distribution of children clinic visits of respiratory diseases in Taipei. Environmental Health Perspectives. Accepted. (Impact factor: 6.087; Rank 4nd/193 in Environmental Sciences in 2011)

 

6.    Jose Angulo, Hwa-Lung Yu*, Andreas Langousis, Ana Esther Madrid, and George Christakos. 2012. “Mathematical modeling of space-time disease distribution under conditions of uncertainty”. International Journal of Geographical Information Sciences. Accepted. (Impact factor: 1.489; Rank 21nd/77 in Information Science & Library Science in 2011)

 

7.        Chen Chu-Chi, Chang-Fu Wu, Hwa-Lung Yu, Chang-Chuan Chan, and Tsun-Jen Cheng. 2012. "Spatiotemporal modeling with temporal-invariant variogram subgroups to estimate fine particulate matter PM2.5 concentrations". Atmospheric Environment. Accepted. (Impact factor: 3.226; Rank 24nd/193 in Environmental Sciences in 2011)

 

8.        Chu Hone-Jay, Hwa-Lung Yu, and Yi-Ming Kuo. 2012. "Identifying spatial mixture distributions of PM2.5 and PM10 in Taiwan during and after a dust storm". Atmospheric Environment. In press. (Impact factor: 3.226; Rank 24nd/193 in Environmental Sciences in 2011)

 

9.        Yu Hwa-Lung, and Chu, H-J *, 2012. “Recharge signal identification based on groundwater level observations”, Environmental Monitoring and Assessment. Accepted. (Impact factor:1.436; Rank 106nd/193 in Environmental Sciences in 2011)

 

10.   Yu, H-L and G. Christakos, 2011. “A Synthetic Method of Spatiotemporal Heterogeneity Characterization”. IEEE-Remote sensing and Geosciences. 49(1), 366-376. (Impact factor: 2.485; Rank 2nd/23 in Remote Sensing in 2011)

 

11.      Yu, H-L, S-J Yang, H-J Yeh, and G. Christakos, 2011. “A Spatiotemporal climate-based model of early dengue fever warning in southern Taiwan”, Stochastic Environmental Research & Risk Assessment. 25(4), 485-494. (Impact factor:1.777; Rank 14nd/115 in Civil Engineering in 2011)

 

12.   Kuo Y-M, S-W Wang, C-S Jang, Naichia Yeh, and H-L Yu*. 2011. “Identifying the Factors Influencing PM2.5 In Southern Taiwan Using Dynamic Factor Analysis”. Atmospheric Environment. In press (Impact factor: 3.226; Rank 24nd/193 in Environmental Sciences in 2011)

 

13.   Liu, W-C, H-L Yu and C-E Chang, 2011. “Assessment of Water Quality in a Subtropical Alpine Lake Using Multivariate Statistical Techniques and Geostatistical Mapping: A Case Study”.  International Journal of Environmental Research and Public Health. 8(4), 1126-1140. (SCI)

 

14.   Yu H-L, C-H Wang, M-C Liu, and Y-M Kuo, 2011. “Estimation of Fine Particulate Matter in Taipei Using Landuse Regression and Bayesian Maximum Entropy Methods”.  International Journal of Environmental Research and Public Health. 8(6), 2153-2169. (SCI)

 

15.   George Christakos, Jose M. Angulo, and H-L Yu, 2011. Constructing space-time pdfs in geosciences. Boletín Geológico y Minero. Accepted.

 

16.   Kuo Y-M, H-J Chu, T-Y Pan, H-L Yu, 2011. “Investigating common trends of annual maximum rainfalls during heavy rainfall events in southern Taiwan”. Journal of hydrology. In press. (Impact factor:2.514; Rank 5nd/115 in Civil Engineering in 2011)

 

17.   Lin, Y.-P., B.-Y. Cheng, H.-J. Chu, T.-K. Chang, and H-L Yu. 2011, Assessing how heavy metal pollution and human activity are related by using logistic regressions and kriging methods. 163 (3-4), 275-282, Geoderma (SCI) (Impact factor:2.178; Rank 5nd/32 in Soil Science in 2011)

 

18.   Yu, H-L, and C-H Wang. 2010. “Retrospective prediction of spatiotemporal distribution of PM2.5 in the metropolis area: a case study in Taipei (Taiwan)”. Atmospheric Environment. 44(25), 3053-3065. (Impact factor: 3.226; Rank 24nd/193 in Environmental Sciences in 2011)

 

19.   Hussain I., J. Pilz, G. Spoeck, and H-L Yu, 2010, “Spatio-Temporal Interpolation of Precipitation during Monsoon Periods in Pakistan”. Advanced in Water Resources. 33(8), 880-886. (Impact factor:2.477; Rank 4nd/76 in Water Resources in 2011)

 

20.   Lin S-T, Y-C Tan, C-H Chen, and H-L Yu, 2010, “Effective hydrogeological parameter estimation in heterogeneous and anisotropic aquifer”, Journal of Hydrology. 389(1-2), 57-68. (Impact factor:2.514; Rank 5nd/115 in Civil Engineering in 2011)

 

21.   Yu, H-L, and H-J Chu, 2010. “Understanding Space-time Patterns of Groundwater Systems by Empirical Orthogonal Functions: a case study in the Choshui River Alluvial Fan, Taiwan”, Journal of Hydrology. 381(3-4), 239-247. (Impact factor:2.514; Rank 5nd/115 in Civil Engineering in 2011)

 

22.   Yu, H-L, C-T Chiang, S-T Lin, C-K Chang, 2010, “Spatiotemporal Analysis and Mapping of Oral Cancer Risk in Changhua County (Taiwan): an application of generalized Bayesian Maximum Entropy method”,  Annals of Epidemiology. 20(2), 99-107. (Impact factor:3.238; Rank 21nd/142 in PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH  in 2011)

 

23.   Yu, H-L, J-C Chen and G. Christakos, 2009. “BME Estimation of Residential Exposure to Ambient PM10 and Ozone at Multiple Time-Scales”. Environmental Health Perspectives.  117(4), 537-544. (SCI) (Impact factor: 6.087; Rank 4nd/193 in Environmental Sciences in 2011)

 

24.   Bogaert, P, G. Christakos, M. Jerrett, and H-L Yu*, 2009. “Spatiotemporal Modelling of Ozone Distribution in the State of California Atmospheric Environment”, Atmospheric Environment. 43(15), 2471-2480. (SCI) (Impact factor: 3.226; Rank 24nd/193 in Environmental Sciences in 2011)

 

25.   Choi, K-M, H-L Yu*, G. Christakos, and M. L. Wilson, 2008, “Spatiotemporal statistical analysis of influenza mortality risk in the state of California during the period 1997-2001”, Stochastic Environmental Research & Risk Assessment. 22(S1), 15-25. (SCI) (Impact factor:1.777; Rank 14nd/115 in Civil Engineering in 2011)

 

26.   Yu, H-L, G. Christakos, K. Modis and G. Papantonopoulos, 2007.  “Composite solution of a physical equation representing the three-dimensional geothermal field in Nea Kessiani (Greece)”. J. Geophysical Research.  112, B06104, doi:10.1029/2006JB004900.  (SCI) (Impact factor: 3.303; Rank 15nd/167 in GEOSCIENCES, MULTIDISCIPLINARY in 2011)

 

27.      Yu, H-L, A. Kolovos, G. Christakos, J-C Chen, S. Warmerdam and B. Dev, 2007. “Interactive Spatiotemporal Modelling of Health Systems: The SEKS-GUI Framework”, Stochastic Environmental Research & Risk Assessment  Special Volume on Medical Geography as a Science of Interdisciplinary Knowledge Synthesis under Conditions of Uncertainty, 21(5), 555-572. (SCI) (Impact factor:1.777; Rank 14nd/115 in Civil Engineering in 2011)

 

28.   Christakos, G., R. A. Olea, and H-L Yu, 2007. "Recent results on the spatiotemporal modelling and comparative analysis of Black Death and Bubonic Plague epidemics". Public Health. 121, 700-720. (SCI) (Impact factor:1.267; Rank 88nd/142 in PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH in 2011)

 

29.   Yu, H-L, and G. Christakos, 2006. “Spatiotemporal modelling and mapping of the Bubonic plague epidemic in India.” International J. of Health Geographics, 5:12.  (No. 3 among the 10 most Highly-accessed papers for 2006). (On-line Serials) (SSCI Impact factor:2.341; Rank 19nd/116 in PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH in 2011)

 

30.   Yu, H-L and G. Christakos, 2006. “Porous media upscaling in terms of mathematical epistemic cognition.” SIAM-Applied Mathematics, vol. 66 (2), 433-446. (SCI) (Impact factor:1.529; Rank 30nd/236 in MATHEMATICS, APPLIED in 2011)

 

Papers under review

31.   Yu H-L, T-J Chang, C-K Wang, M-M Lu, Y-M Kuo, C-P Tung, 2011. “Analysis of space-time patterns of rainfall events during 1989-2008 in I-lan county (Taiwan)”, Journal of Hydrology. In review.

 

 

Papers in Refereed Volumes:

 

1.        Yu H-L, Wang C-H, Christakos G., and Wu Y-Z. 2011. "Spatiotemporal Analysis of PM2.5 Exposure in Taipei (Taiwan) by integrating PM10 and TSP observations ". Geospatial Analysis of Environmental Health, McLafferty S. and Maantay J. (eds.), Springer Series on “Geotechnologies and the Environment”, New York, NY.

 

2.        Hwa-Lung Yu, Shang-Chen Ku, Chiang-Hsing Yang, Tsun-Jen Cheng and Likwang Chen (2011). Assessment of Areal Average Air Quality Level over Irregular Areas: a Case Study of PM10 Exposure Estimation in Taipei (Taiwan), Advanced Air Pollution, Farhad Nejadkoorki (Ed.), ISBN: 978-953-307-511-2, InTech

 

3.        Yu H-L, G. Christakos, P. Bogaert, 2010 “Dealing with Spatiotemporal Heterogeneity: The Generalized BME Model”, Advances in Spatial Sciences, Springer.

 

4.        Ta-Chien Chan, Hwa-Lung Yu, Po-Huang Chiang, Chwan-Chuen King. “Bayesian Maximum Entropy Modeling of Spatio-temporal Winter Influenza Epdiemic in Taiwan”. In: Daniel Zeng, Ta-Chien Chan, Chwan-Chuen King, Hsinchun Chen, eds. Intelligence and Security Informatics: Biosurveillance and Biosecurity. New York: Westing Publishing Co.; 2009.

 

5.        Pan T-Y, R-Y Wang, J-S Lai, and H-L Yu, 2008, “Application of Recurrent Neural Networks to Rainfall-runoff Processes”, Recurrent Neural Networks, I-Tech Education and Publishing, Vienna, Austria, 203-228.

 

6.        Modis, K., H-L Yu and G. Christakos, 2007, R. Stewart and G. Papantonopoulos.  “Novel tools in geothermal energy research”. In Geothermal Energy Research Frontiers, Columbus, F. (ed.), Nova Science Publishers, Inc., Hauppauge, NY. 3-17.

 

7.        Yu, H-L, G. Christakos and J-C Chen, 2007.  “Spatiotemporal air pollution modeling and prediction in epidemiologic research”. In Air Pollution Research Trends, Columbus, F. (ed.), Nova Science Publishers, Inc., Hauppauge, NY. 57-75.

 

Working paper

1.        Tsung-Yi Pan, Hwa-Lung Yu*, Chun-Jih Liou, Yuan-Chien Lin, “Assessment of flooding impact to dengue fever occurrence in southern Taiwan”. Special Issue on Climate Change and Human Health, International Journal of Environmental Research and Public Health. In preparation.

 

2.        Tsung-Yi Pan, Hwa-Lung Yu, Yong-Jun Lin, Tsang-Jung Chang, Jihn-Sung Lai and Yih-Chi Tan, “Potential Risk Map of Escherichia coli in Typhoon Floods: A Geostatistical Approach Integrating Landuse Information and Flood Simulation in Linbian, Taiwan”, International Journal of Environmental Research and Public Health. In preparation.

 

3.        Hwa-Lung Yu, Yuan-Chien Lin, Yi-Ming Kuo. Investigating temporal variation of ambient pollutants at Hsin-Chuang supersite in Taipei (Taiwan) by dynamic factor analysis. In preparation.

 

 

Presentations

l  Hwa-Lung Yu, Yuan-Chien Lin, 2011. Understanding the temporal patterns of aerosols at Hsin-Chuang supersite in Taipei. 2011 Annual meeting of Society of Risk Analysis. December 4-7, 2011. (International Award)

 

l  余化龍, 王振剛, 氣候變遷對台灣宜蘭地區降雨之影響, 第十五屆海峽兩岸水利科技交流研討會(2011)

 

l  林遠見, 余化龍, 應用廣義線性模型分析影響台灣之颱風路徑之時空分析, 第十五屆海峽兩岸水利科技交流研討會(2011)

 

l  Yun-Hsu Shu, Yuan-Chien Lin, Hwa-Lung Yu . 2011. Impact assessment of urban heat island effect to spatiotemporal distribution of rainfall in Taipei metropolitan area (Taiwan), 2011 Annual conference of Asia Oceania Geophysical Society, Taipei, Taiwan, August 8-12, 2011.

 

l  Po-Lin Chen, Hwa-Lung Yu, 2011. Estimating spatial rainfall in I-Lan (Taiwan) using copula-based geostatistics, 2011 Annual conference of Asia Oceania Geophysical Society, Taipei, Taiwan, August 8-12, 2011.

 

l  Hwa-Lung Yu and Chen-Kan Wang. 2011. Regional statistical downscaling of weekly rainfall in Lanyang catchment (Taiwan), 2011 Annual conference of Asia Oceania Geophysical Society, Taipei, Taiwan, August 8-12, 2011.

 

l  Hwa-Lung Yu, 2011. Data assimilation for spatiotemporal mapping for fine particulate matter by Bayesian maximum entropy method. 2011 Joint Statistical Meeting, Miami, USA, July30-August 4

 

l  Hwa-Lung Yu, and Ku Shang-Chen, 2011. QtBME: A toolbox of Bayesian maximum entropy method on Quantum GIS, 2011 IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services, Fuzhou, China, June 28- July 2, 2011.

 

l  Yuan-Chien Lin, Hwa-Lung Yu, Tsang-Jung Chang, and Yih-Chi Tan, Modeling of space-time typhoon tracks in the vicinity of Taiwan by generalized linear model, European Geosciences Union (2011)

 

l  Hwa-Lung Yu, Yuan-Chien Lin, and Bellie Sivakumar, Study of temporal dynamics of aerosols at Hsin-Chuang supersite in Taipei (Taiwan) using dynamic factor analysis and correlation dimension method, European Geosciences Union (2011)

 

l  Po-Lin Lin, Hwa-Lung Yu, and Bellie Sivakumar, Investigating space-time patterns of rainfall in I-Lan (Taiwan) by hierarchical clustering and correlation dimension methods, European Geosciences Union (2011)

 

l  Yu, H-L, 2010. “Retrospective prediction of PM2.5 in Taipei (Taiwan)”, the Eighth ICSA International Conference: Frontiers of Interdisciplinary and Methodological Statistical Research, Guangzhou, China, Dec 19-22, 2010. (Invited talk)

 

l  Lin, Y-C and H-L Yu, 2010. “Investigating temporal variation of ambient pollutants at Hsin-Chuang supersite in Taipei (Taiwan) by dynamic factor analysis”. 2010 International Society of Exposure Sciences (ISES) Conference, Seoul, Korea, Aug 28-Sep 1, 2010. (Student Travel Award)

 

l  Wang, C-H and H-L Yu, 2010. “Spatiotemporal estimation of PM2.5 by landuse regression and Bayesian maximum entropy method”. 2010 International Society of Exposure Sciences (ISES) Conference, Seoul, Korea, Aug 28-Sep 1, 2010. (Student Travel Award)

 

l  Yu, H-L, 2010. “Understanding the space-time patterns of a groundwater system: a case study in Choshui river aquifer (Taiwan)”. Invited Seminar Talk at Eawag in Switzerland. May 10, 2010. (Invited Talk)

 

l  Yu, H-L, and C-K Wang, 2010. “Statistical downscaling of monthly precipitation in Lanyang catchment (Taiwan)”, 10th International Symposium on Stochastic Hydraulics and the 5th International Conference on Water Resources and Environment Research (joint Water 2010 symposium), Quebec City. July 5-7, 2010.

 

l  Yu, H-L, and S-J Yang, 2010. “Analysis of spatiotemporal patterns from groundwater observations”, 10th International Symposium on Stochastic Hydraulics and the 5th International Conference on Water Resources and Environment Research (joint Water 2010 symposium), Quebec City. July 5-7, 2010.

 

l  Yu, H-L, and T-J Chang, 2010. “Application of hierarchical clustering method to classify the space-time rainfall patterns in Lanyang catchment (Taiwan)”, 10th International Symposium on Stochastic Hydraulics and the 5th International Conference on Water Resources and Environment Research (joint Water 2010 symposium), Quebec City. July 5-7, 2010.

 

l  Yu, H-L, and C-H Wang, “Estimation Of Spatiotemporal Distribution Of Fine Particulate Matter Exposure In Taipei City (Taiwan)”, 2009 International Society of Exposure Sciences (ISES) Conference, Minneapolis, MN, November 1-5, 2009.

 

l  Yu, H-L, C-H Wang, and Y-Z Wu, “An automatic approach to the mean and covariance estimations of spatiotemporal nonstationary processes”, Proceedings of the StatGIS 2009 Conference, Milos, Greece, June 17-19, 2009.

 

l  Yu, H-L, C-H Wang, J-C Chen, and G. Christakos, “Accuracy Assessment of Long-Term Exposure Estimation Using Modern Geostatistics”, The 18th Annual Conference of the International Society of Exposure Analysis (joint with International Society of Environmental Epidemiology), Pasadena, California, October 12-16.

 

l  J-C Chen, GS Cooper, H-L Yu and G. Christakos, “Ambient Air Pollution and Increased Mortality in Lupus”, The 18th Annual Conference of the International Society of Exposure Analysis (joint with International Society of Environmental Epidemiology),, Pasadena, California, October 12-16.

 

l  Yu, H-L, Choi, K-M, and Christakos, G., 2008, “Climate issues of influenza mortality risks”, European Geophysical Union (EGU) General Assembly, Vienna, Austria, April 13-18.

 

l  Lin, H.T., Yu, H.-L., Tan, Y.C., and Chen, C.H., “Effective hydrogeological parameter estimation with a novel modified Tabu search algorithm”, European Geophysical Union (EGU) General Assembly, Vienna, Austria, April 13-18, 2008. (Poster)

 

l  Kolovos, A., and H.-L. Yu, “Knowledge Synthesis-Based Tool Development for Spatiotemporal Analysis”, European Geophysical Union (EGU)  General Assembly, Vienna, Austria, April 13-18, 2008.

 

l  Yu, H-L, J-C Chen, and G. Christakos, 2007.  “Integrative spatiotemporal exposure assessment: an example on PM2.5 estimation in North Carolina”, 17th Annual International Society of Exposure Analysis (ISEA) Conference, Durham, North Carolina, October 14-18.

 

l  Yu, H-L and G. Christakos, 2007.  “Integrated spatiotemporal modelling and mapping of natural systems”, American Assoc. of Geographers (AAG) Annual Meeting, San Francisco, California, April 17-21.

 

l  Yu, H-L; Christakos, G; Tartakovsky, D; Modis, K; Papantonopoulos, G, 2007. “Composite Stochastic Solution of a 3-D Geothermal Model -- Nea Kessani (Greece)", EGU General Assembly, Vienna, Austria, April 15 – 20. (Poster)

 

l  Marc L. Serre, S. J. Lee, and H-L Yu, 2002. “Toxicokinetic modeling using space/time mapping of exposure fields with existing health outcome data in a measurement error model.” External Advisory Committee meeting of the Center of Environmental Health and Susceptibility at UNC - Pilot Project Program, September 12. (Poster)

 

l  Yu, H-L, C-H Chen, and Y-C Tan, 2002. “Applied spectral method on random field generation.” Proceedings of the 13th Hydraulic Engineering Conference, Yunlin, Taiwan. July 31-August 1.

 

l  Yu, H-L, C-H Chen, and Y-C Tan, 2002. “Applied the random walk method to solute pollutant transport in heterogeneous porous media”. The Ninth International Conference on Computing in Civil and Building Engineering, Taipei, Taiwan. April 3-5.

 

l  Yu, H-L, C-H Chen, and Y-C Tan, 2001. “Computer simulation of solute transport in heterogeneous porous media”. The Conference of Agricultural Engineering, Taipei, Taiwan. December 16.

 

l  Yu H-L, C-H Chen, Y-C Tan, 2001. “Applied the random walk Method to predict solute contaminant transport in groundwater”. Proceedings of the 12th Hydraulic Engineering Conference, Taiwan. July 12-13.

 

l  Lee, C-Y, H-L Yu, and M-D Su, 1997. “Application of GIS network analysis-A case study on campus garbage pickup”. The Conference of Agricultural Engineering, Tainan, Taiwan. December 16-17.