Publications
1. Helweg, O. J., "Water supply study for the King Faisal University Experiment Station"; water Studies center Report 1, 1984.
2. EL- Khashab, Ahmed, M., "Two Dimensional Analysis of Sloping Submerged outfalls"; Proceedings of the 1st. International Conference on Hydraulics Design in water Resources Engineering, University of Southampton, England, April 1984.
3. Sharma, P. N. and Otto, J. Helweg, "Problems with Traditional mall Reservoir Irrigations Systems in the Semi-Arid Tropics"; Transactions, American Society of Agricultural Engineers, 1984.
4. Sabat, M. H., and Helweg, O. J., "Cost Effective Operation of Urban Water Supply System Using Dynamic Programming"; Water Resources Bulletin, Vol. 21, No. 1, February 1985.
5. Helweg, O. J., "Water Resources planning and Management", John Wiley: N.Y.; 1985.
6. EI-Khashab, Ahmed M., "Form drag Resistance of Two Dimensional stepped steep open channels"; Tenth Canadian Conference of Applied Mechanics, University of western Ontario, London, Canada, 2-7 June 1985.
7. EI-Khashab, Ahmed M., "Unsteady Spread of Buoyant Surface discharge"; proceedings of the Symposium of Environmental Protection and Management in the Kingdom of Saudi Arabia, University of Abha, 7 - 10 April 1985.
8. AL-Basher, Abdullah, Helweg, O. J., and Ahmed Alajaji; "Nonstructural methods Encourage Irrigation Efficiency"; Second Saudi Engineers Conference, University Of Petroleum and Minerals, Vol. 4, 15-19 November 1985.
9. Helweg, o. J., and Ahmed El-Khashab, "Application of the Step Drawdown Test in Pump Selection"; Conference, University of Petroleum and Minerals, vol. 4, 15-19 November 1985.
10. Turjoman, Abdul Mannan, Otto J. Helweg, and Kadhim Khalil, "Analysis of Factors Effectors Wheat Yield"; Ninth Symposium on the Biological Aspects of Saudi Arabia, Riyadh, 24-27 March 1986.
11. Al-Basher, Abdullah and Otto J. Helweg, "Optimal Crop Inputs by Quadratic Programming"; Ninth Symposium on the Biological Aspects of Saudi Arabia, Riyadh, 24-27 March 1986.
12. Hussain, G., O. J. Helweg, and A. Alajaji, "The Effect of Climatic Variations on Agricultural Water Requirements"; Proceedings of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April 1986.
13. Alajaji Ahmed, "Evaluating Small Farm Irrigation Efficiency"; Proceedings of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April1986.
14. HRH Prince Mughrin Bin Abdulaziz, Mohammed Al-Besher, and Otto J. Helweg, "Optimal CROP Water Requirements"; Proceedings of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April 1986.
15. Helweg, O, J., and A. El-Khashahb, "Reservoir Routing with Spread Sheets"; Proceeding of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April 1986.
16. Turjoman, Abdul-Mannan, "Cost Allocation in Water Resources projects"; Proceedings of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April 1986.
17. El-Khashab, Ahmed M., and Otto J. Helweg, "Optimal Design of Multi-Outlet Pipes for Irrigation systems"; Proceedings of the Symposium of Water and Its Resources in Qassim, 31 March - 2 April 1986.
18. Helweg, O. J., "Modification of the Step Drawdown Test for Pump Selection"; Water Forum 86, ASCE, Long Beach, California, and 5 - 7 August 1986.
19. Turjoman, Abdul-Mannan, and Otto J. Helweg, "Traveling Trickler Center Pivot Design"; water Forum 86, ASCE, Long Beach, California, 5 - 7 August 1986.
20. Helweg , Otto J., and Ahmed Alajaji , "Directory of water Resources Experts, Kingdom of Saudi Arabia"; water Studies Center Report, 2, 1986.
21. Turjoman, Abdul-Mannan, and Otto J. Helweg, "Evaluation a Wheat Production Function With Multiple Inputs"; Agronomy Journal, 1986.
22. Helweg, Otto J. and John M. Mc Clung, "A Comparison of Urban Runoff Lumped-Parameter Models Using Sparse Data"; Arabian Journal of Science and Engineering, 1986.
23. El -Khashab, Ahmed M. "Hydraulic Model Studies on Silt Exclusion"; Arabian Journal of Science and Engineering, 1986.
24. Helweg, Otto J., and Ahmed M. El -Khashab, "Microcomputer Applications in Water Resources"; KFU PRESS, 1986
25. Helweg, Otto J., Ghulam Hussain, and am Abdul-Mannan Turjoman, "Analyzing Irrigation Site Selection Data by Matrix Overlays"; International Conference on Water Resources Needs and Planning in Drought Prone Areas, Khartoum, Sudan, 6 -12 December 1986.
26. El-Khashab, Ahmed M., and Otto J. Helweg, "Criterion for Deposition of Sediment Transported in Rigid Boundary Channels"; International Conference on Water Resources Needs and Planning in Drought Prone Areas, Khartoum, Sudan, 6 - 12 December 1986.
27. El-Khashab , Ahmed M., and Otto J. Helweg , "Determination of Control Points in Specially Varied Open Channels"; International Conference on Water Resources Needs and Planning in Drought Prone Areas, Khartoum, Sudan, 6 - 12 December 1986.
28. El-Khashab, Ahmed M., "Criterion for Deposition of Sediment Transported in Rigid Boundary Channels"; Proceedings, Faculty of Engineering, Cairo University, 1986
29. El -Khashab, Ahmed M., "Pressurized Irrigation Systems"; Anglo Egyptian Publishers: Cairo; 1986.
30. El-Khashab, Ahmed M., and O. J. Helweg, "Optimal Well Spacing With the Fibonnaci Search"; Journal of Engineering Sciences. 1986.
31. Hussain. G., and A. M. Al-Sheikh, "Effect of Drainage Water on Wind Break"; Proceedings, American Society of Agricultural Engineers, Winter Meeting 1987.
32. Al-Sheikh, A. M., M, Al-Besher, and O. J. Helweg, "The Economy of Irrigation Water Conservation for Center Pivot"; Proceedings, American Society of Agricultural Engineers, Winter Meeting 1987.
33. Helweg, O. J ., and A. Al-Besher, "Large Scale Soil Conservation Systems with Matrix Overlays"; Proceedings, American Society of Agricultural Engineers, Winter Meeting 1987.
34. Makki, Y., G. Hussain, O. J. Helweg and W. Alvarado, "The Effects of Palm Leaf Mulch to Conserve Soil Moisture"; Al-Khafii, March 1987.
35. El-Khashab, A. M., O. J. Helweg, and A. Al-Besher, "Modeling Materials for Protecting Earth weirs"; Proceedings of the Nati onal Conference on Hydraulic Engineering and Engineering Hydrology Symposium, 1987.
36. Al -Besher, A., and O. J. Helweg, "Economic Emitter Spacing for Movable Irrigation Systems"; Journal of the Irrigation and Drainage Division, ASCE, Submitted for Review, 1987.
37. AL-Besher, A., "Nonlinear Economic Models for Crop Production"; Proceeding, Irrigation Systems for the Twenty-First Century, 1987.
38. Turjoman, A. M., O. J, Helweg and G. Hussain, "Spread Sheet Models to Facilitate and Drainage Project Formulation"; Proceedings, Irrigation Systems for the Twenty-First Century, 1987.
39. Helweg, O. J., and El-Khashab, "Evaluating the General Well Function"; Proceedings of the National Conference on Hydraulic Engineering and Engineering Hydrology Symposium, 1987.
40. El-Khashab, A. M., and A. Alajaji, "Theorecital Flow Model for Drop Structures"; Proceedings of the National Conference on Hydraulic Engineering and Engineering Hydrology Symposium, 1987.
41. El-Khashab, A. M., and O. A. Benduheash, "Comparative Discharge Performance of Side and Normal Weirs"; Proceedings of the National Conference on Hydraulic Engineering and Engineering Hydrology Symposium, 1987.
42. Alajaji, A., A. M. Al-Sheikh, and O. J. Helweg, "Modified CIMIS Irrigation Scheduling Program"; Proceedings of the National Conference on Hydraulic Engineering and Engineering Hydrology Symposium, 1987.
43. Helweg, O. J., "Using Center Pivots for Research"; Journal of the Irrigation and Drainage Division, ASCE, 1988.
44. Helweg, O. J., "The General Well Function"; Ground Water, 1988.
45. Helweg, O. J., "Functions of Crop Yield from Applied Water"; Journal of the Irrigation and Drainage Division, ASCE, 1988
46. Al-Sheikh, A. M., O. J. Helweg, and A. Alajaji, "Choices Between Micro and Main Frame Computers"; Proceedings, Irrigation Systems for the Twenty-First Century, 1988
47. El-Khashab, A. M., and O. J. Helweg, "Use of Spread Sheets in Water Resources Planning"; Proceedings, Irrigation Systems for the Twenty-First Century, 1988.
48. Helweg, O. J. "Mainer Functions as a Model of Crop Yield vs. Applied Water"; Proceedings, Irrigation Systems for the Twenty-First Century, 1988.
49. Alajaji, A., O. J. Helweg, A. Al-Naim, and S. Al-Barrak, "Rating Curves for Adjustable Tricklers"; Proceedings, Irrigation Systems for the Twenty-First Century, 1988.
50. Helweg, O. J., and A. M. El-Khashab, "A Microcomputer Solution to Find Critical Depth"; Proceedings From Water and Its Resources in Qassim, Qassim Saudi Arabia, 31 March - 2 April 1986,
51. Turjoman, A. M., "Unifying Evaluation Theory in Water Resources Planning"; Arabian Journal for Science and Engineering, 1988.
52. Uan-Un. T., and O. J. Helweg, "Nonlinear Reservoir Analysis with Risk-Benefit Objectives"; Journal of the International Water Resources Association, 1986.
53. Turjoman, A. M., and O. J. Helweg, "A Descriptive Structure for Water Resources Planning"; Water Resources Bulletin, 1986.
54. Turjoman, A. M., and O. J. Helweg, "Water in Engineering"; A Chapter in Water and Life, Published by the University Of Khartoum in Arabic, 1986.
55. Helweg, O. J., "Evaluating the Traveling Trickler Center Pivot"; Journal of the Irrigation and Drainage Division, ASCE, 1986.
56. El-Khashab, A. M., "Pressure Fluctuations on the Floor of Hydraulic Jumps"; Proceedings, National Conference on Hydraulic Engineering, ASCE, Williamsburg, VA, 3-7 August 1987.
57. Al-Sheikh, A. M., M. Al-Basher, and O. J. Helweg, "Economic Analysis of the Traveling Trickler System"; ICID Bulletin, 1987.
58. Helweg, O. J., "Effect of the Planning Approach on Implementation"; Water Resources Bulletin, 1987.
59. Alajaji, A. N. and O. J. Helweg, "Fourier Series as a Prediction of Pan Evaporation", WSC-KFU, 1987.
60. Hussein, G., M.H. Badawi and Y.A. Nablsi, "Water requirements for reclamation of salt affected soils in Al-Ahsa, Saudi Arabia"; Arid Soil Res. 3(3) 1989.
61. HUSSAIN, G. and Y.A. Nabulsi, "Al-Ahsa Oasis: Potential of Irrigated Agricultural Problems and Management Alternatives"; Centre for Desert Studies, Riyadh Untv. Oct. 1989.
62. Hussain, G. and Y.A. Nabulsi, "Effect of saline drainage water irrigation on windbreak trees and soil chemicals Properties"; Presented on International Conference on Agricultural Mang. In Salt Affected Areas AGADIR, Morocco. April 22-28, 1991.
63. Abderrahman, W. and Y.A. Nabulsi, "Estimation of Crop Evapotranspiration of Date Palm Under severely arid conditions: A Case study"; Presented to 3rd Sympsosium on Date Palm, Date Palm Research Center, and K.F.U, 1991
64. Nabulsi, Y.A. and G. Hussain, "Applicability of Gypsum Blocks and Soil Moisture Cells under Al-Ahsa Conditions", WSC-KFU, 1992
65. Al Saeedi, A. H., "The Response of Salicornia to Fertilizer under Irrigation with Sea Water: A Pots Experiment"; Alex. Journal of Agriculture Research. 42 (2): pp 187-193, 1997
66. Al Saeedi, A. H. and A. M. Elprince, "The Use of DRAINKIM in Assessment of the Re-use of Drainage Water in Al- Hassa Oasis"; Journal of King Abdulaziz University, Meteorology, Environment and Arid Land Agriculture Sciences, Vol. 11, pp. 1-115, 2000.
67. Al Saeedi, A. H. and A. M. Elprince, "Chemical Reagents for the Standard Methods of Water, Soil, and Plant Analysis". WSC-KFU, 2000
68. Al Saeedi, A. H. and A. M. Elprince, "Modeling Solute Transport in the Soil Underground Water Complex". WSC-KFU, 2001
69. Elprince, Adel M, and Yousef Y. Al-Dakheel," Modeling Nutrient Availability in Salt Marsh Soil ", Water Studies Center, 2003.
70. Elprince, Adel M, and Yousef Y. Al-Dakheel "Georeferencing Irrigation And Drainage Networks Using Advanced Spatial Technology", Water Studies Center. 2003.
71. تقويم موارد مياه الري في واحة الأحساء
72. أهمية المياه المتجددة في التنمية الزراعية في المملكة العربية السعودية
73. الطرق الحديثة في قياس رطوبة التربة
