01. Chen, Y. I. and Wolfe D.A.  (1990) A study of distribution-free tests for umbrella alternatives.  Biometrical J  32 , 47-57. (PDF)

02. Chen, Y. I. and Wolfe D.A. (1990)  Modifications of the Mack-Wolfe umbrella tests for a generalized Behrens-Fisher problem.  Canadian Journal Statistics  18 ,  245-253. (PDF)

03. Chen, Y. I. Notes on the Mack-Wolfe and Chen-Wolfe tests for umbrella alternatives. (1991) Biometrical  J  33 , 281-290. (PDF)

04. Chen, Y. I. (1992) Robust umbrella tests for a generalized Behrens-Fisher problem. Biometrical J  34 , 347-357. (PDF)

05. Chen, Y. I. (1993) On the Comparison of umbrella pattern treatment means with a control mean. Biometrical J  35 , 689-700. (PDF)

06. Chen, Y. I. and Wolfe D.A. (1993) Nonparametric procedures for comparing umbrella pattern treatment effects  with a control  in a one-way layout. Biometrics  49 ,  455-465. (PDF)

07. Chen, Y. I.  (1993) Nonparametric comparisons of umbrella pattern treatment effects with a control in a  one-way layout. Communications in Statistics: Simulation and Computation  22 , 749-764. (PDF)

08. Chen, Y. I. (1994) A generalized steel’s procedure for comparing several treatments with a control under random right-censorship.  Communications in Statistics: Simulation and Computation  23 , 1-16. (PDF)

09. Chen, Y. I., Cheng, S. S. and Wang, H. L. (1996) Rank-based comparisons of treatments with a control for repeated measures design. Computational Statistics and Data Analysis  22 , 235-249. (PDF)

10. Chen, Y. I. (1998) Simple-tree weighted logrank tests for right-censored data. Annals of the Institute of Statistical Mathematics  50 , 311-324. (PDF)

11. Chen, Y. I. (1999) Rank-based tests for dose finding in nonmonotonic dose- response setting. Biometrics  55 , 1258-1260. (PDF)

12. Chen, Y. I. (1999) Nonparametric identification of the minimum effective dose. Biometrics  55 , 1236-1240.  (PDF)

13. Chen, Y. I. and D.A. Wolfe (2000) Umbrella Tests for right-censored survival data. Statistica Sinica  10 , 595-612.(PDF)

14. Chen, Y. I. and Chi, Y. C. (2000) Multiple comparisons between successive treatments for randomly right- censored survival data. Journal of  Statistical Planning and Inference  83 , 137-151. (PDF)

15. Chen, Y. I. (2000) Multiple comparisons in carcinogenesis study with right- censored survival data. Statistics  in Medicine  19 , 353-367.  (PDF)

16. Chen, Y. I., Liu, J. Y. and Chen, S.C. (2000) Statistical investigation of the saturation effect of sunspot on the ionospheric foF2. Physics and Chemistry of Earth  25 , 359-362. (PDF)

17. Liu, J. Y., Chen, Y. I., Pulient, S. A., Tsai, Y.B., and Choi, Y. J. (2000) Sesimo-ionospheric signatures prior to the M>6.0 Taiwan earthquakes. Geophysical Research Letter  27  3113-3116. (PDF)

18. Lee, W.C. and Chen, Y. I. (2001) Weighted Kaplan-Meier tests for umbrella alternatives. Annals of Institute of  Statistical Mathematics  53 , 835-852. (PDF)

19. Liu, J.Y., Chen, Y. I., Chou., Y.J., and Tsai, H.F.  (2001) Variations of ionospheric total electron content during the Chi-Chi earthquake.  Geophysical Research Letter  28 , 1383-1386. (PDF)

20. Chen, Y. I. and Jan, S.L. (2002) Nonparametric identification of the minimum effective dose for randomized block  designs. Communications in  Statistics: Simulation and Computation  31 , 301-312. (PDF)

21. Lee W.C., Chen, Y. I. and Chi, Y.C. (2002) A comparison between weighted Kaplan-Meier statistics and weighted logrank statistics. J. Chinese Stat. Assoc  40, 519-539. 

22. Chuo, Y.J., Liu, J.Y., Pulinets, S.A. and Chen, Y. I.  (2002) The ionospheric perturbations prior to Chi-Chi and Chia-Yi earthquakes. Journal of Geodynamics  33 , 509-517. (PDF)

23. Chuo, Y.J., Liu, J. Y., Komogawa, M., and Chen, Y. I.  (2002) The anomalies in the foEs prior to M 6.0 Taiwan earthquakes. Seismo.  Electromagnetics, Ed. M. Hayakawa and O.A. Molchanov  309-312. (PDF)

24. Liu, J.Y., Chen, Y. I. and Lin, J.S.  (2003) Statistical investigation of the saturation effect in the ionospheric foF2 versus sunspot, solar radio  noise, and solar EUV radiation. Journal of Geophysical Research  108 , 1067-1073.  (PDF)

25. Lin, J.H., Yeh,Y.S., Chen, Y. I. , Liu, J.Y. and Chen K.J.  (2003) Earthquake clustering relative to lunar phase in Taiwan. Terrestrial, Atmospheric and Oceanic Sciences  14 ,  289-298. (PDF)

26. Jan, S.L. and Chen, Y. I.    (2004) Nonparametric procedures for simultaneous identification of the minimum effective does in each of several groups. Journal of Biopharmaceutical Statistics  14 ,  781-789. (PDF)

27. Liu, J.Y., Chuo, Y.J., Shan, S.J., Tsai,Y.B., Chen, Y.I., Pulinets, S.A., and Yu, S.B. (2004) Pre-earthquake  ionospheric anomalies registered by continuous GPS TEC measurements. Annales Geophysica  22 ,  1-8. (PDF)

28. Chen, Y.I., Liu, J.Y., Tsai, Y.B. and Chen, C.S.  (2004) Statistical tests for the pre-earthquake ionospheric anomaly. Terrestrial, Atmospheric and Oceanic Sciences  15 , 385-396. (PDF)

29. Liu, J.Y., Chen, Y.I., Jhuang, H.K. and Lin, Y.H.  (2004) Ionospheric foF2 and  TEC anomalous days associated with M>5.0 earthquakes in  Taiwan during 1997-1999. Terrestrial, Atmospheric and Oceanic Sciences  15 ,  371-384. (PDF)

30. Tsai, Y.B., Liu, J.Y., Ma, K.F., Yen, H.Y., Chen, K. S., Chen, Y.I., Lee, C. P.  (2004) Preliminary results of  the  iSTEP program on integrated search for  taiwan earthquake precursors. Terrestrial, Atmospheric and Oceanic Sciences  15 , 545-562. (PDF)

31. Chen, Y.I., Huang, C.S. and Hong, C.H.  (2004) Statistical assessment for the  hazard of large aftershocks post to the Chi-Chi mainshock. Terrestrial, Atmospheric and Oceanic Sciences  15 , 493-502. (PDF)

32. Fujiwara, H., Komogawa, M., Ikeda, M., Liu, J.Y., Sakata, H., Chen, Y.I., et al. (2004) Atmospheric anomalies observed during earthquake occurrence. Geophysical Research Letter  31 ,  L17110. (PDF)

33. Zhaung, J., Ogata, Y., Chang,, C.P. and Chen, Y.I.  (2005) A study on the background and clustering seismicity  in the Taiwan  region by using  point  process models. Journal of Geophysical Researches  110. (PDF)

34. Liu, J. Y., Chen,C. H. , Chen, Y. I. , Yen, H. Y.,  Hattori, K. and Yumoto.  (2005) Seismo- geomagnetic anomalies and M›.5.0 earthquakes observed in Taiwan during 1988-2001. Physics and Chemistry of Earth   31 ,  215-222. (PDF)

35. Liu, J. Y., Y. I. Chen, and Y. J. Chuo,  (2006) A statistical investigation of preearthquake ionospheric anomaly. Journal of Geophysical  Researches  111 ,  A05304. (PDF)

36. Tsai, Y. B., K. F. Ma, H. Y., Yen, K. S. Chen, J. Y. Liu, Y. I. Chen, and C. P. Lee. (2006) Precursory phenomena associated with the 1999 Chi-Chi earthquake in Taiwan as identified under the iSTEP program. Physics and Chemistry of Earth  31 ,  365-377. (PDF)

37. Liu, J. Y., Y. B. Tsai, K. F. Ma, Y. I. Chen, H. F. Tsau, C. H. Lin, Masashi Kamogawa and C. P. Lee.  (2006) Ionospheric GPS TEC disturbances triggered by the 26 December 2004 Indian Ocean Tsunami. Journal of Geophysical Researches  111. (PDF)

38. Liu, J. Y., C. H. Lin, Y. I. Chen, Y. C. Lin, T. W. Fang, C. H. Chen, Y. C. Chen, and J. J. Hwang.  (2006) Solar flare signatures of the ionospheric GPS total electron content. Journal of Geophysical Researches  111. (PDF)

39. Jan, S.L. , Chen, Y. I. and Shieh, G.W.  (2007) Simultaneous identification of the mminimum effective does in each of several groups. Journal of Statistical Computation and Simulation   77 ,  149-161. (PDF)

40. Chen, Y. I. and Chang, Y.M.  (2007) Covariates-dependent confidence intervals for the difference or ratio of two median survival times. Statistics in Medicine   26 ,  2203-2213. (PDF)

41. Chen, Y. I. and Chang, Y.M. (2007) Identification of the minimum effective dose for right-censored data. Computational Statistics and Data  Analysis   51 ,   3213-3222.  (PDF)

42. Chen, Y. I. and Wang, K. L.  (2008) Simultaneous nonparametric confidence regions for comparing successive treatments. Advances and Applications in Statistics   9 ,  127-139. (PDF)

43. Liu, J. Y., Chen, Y. I. , Chen C. H., Liu, C. Y., Chen, C. Y., Nishihashi, M., Li, J. Z., Xia, Y. Q., Oyama, K. I., Hattori, K. I. and Lin, C. H.  (2009) Seismoionospheric GPS total electron content anomalies observed before the 12 May 2008 Mw7.9 Wenchuan earthquake, Journal of Geophysical Research   114 ,  A04320. (PDF)

44. Chen, Y. I. and Huang C. S. (2009) Multiple testing for bioequivalence with pharmacokinetic data in 2x2 crossover designs. Statistics in Medicine   28 ,  3567-3579. (PDF)

45.Chen, C.H., Liu, J.Y., Lin, P.Y., Yen, H.Y., Hattori, K., Liang, W.T., Chen, Y.I.., Yeh, Y.H., Zeng, X. (2010) Pre-seismic Geomagnetic Anomaly and Earthquake Location, Tectonophysics  489 ,  240-247. (PDF)

46.Liu, J.Y., Chen, C.H.,  Chen, Y. I., Yang, W.H., Oyama, .I. and Kuo, K.W.  (2010) A statistical study of ionospheric earthquake precursors monitored by using equatorial ionization anomaly of GPS TEC in Taiwan during 2000-2007. Journal of Asian Earth Science  39 , 76-80. (PDF)

47.Liu, J. Y., H. F. Tsai, C. H. Lin, M. Kamogawa, Chen, Y.I., C. H. Lin, B. S. Huang, S. B. Yu, and Y. H. Yeh. (2010) Coseismic ionospheric disturbances triggered by the Chi-Chi earthquake, J. Geophys. Res   115 ,  A08303. (PDF)

48. Liu, J. Y., Chen, Y. I., C. H. Chen, and K. Hattori. (2010) Temporal and spatial precursors in the ionospheric GPS total electron content observed before the 26 December 2004 M9.3 Sumatra-Andaman Earthquake, J. Geophys. Res   115 ,  A09312. (PDF)

49.Liu, J. Y., Le, H., Chen, Y. I., Chen, C. H., Liu, L., Wan, W., Su, Y. Z., Sun, Y. Y., Lin, C. H., Chen, M. Q. (2011) Observations and simulations of seismoionospheric GPS total electron content anomalies before the 12 January 2010 M7 Haiti earthquake, J. Geophys. Res   116 ,  A04302. (PDF)

50. Chang, Y. M. and Chen, Y. I.  (2011) Identification of the mininum effective dose based on weighted Kaplan-Meier statistics. Journal of Statistical Computation and Simulation   81:5 619-634. (PDF)