ARTICLES
Published research work
Abdul-Aziz M. Duwais, Essam A. Abo Elwafa and Mostafa M. Mansour
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Alex. J. Agric. Res. 37(3) Arabic: 1-26, 1992.
· The Derived Demand for Chemical Fertilizer in Saudi ArabiaSafar H. Kahtani and Abdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Bull. Fac. of Agric., Univ of Cairo, Vol. 43 No. 4, Suppl. (October 1992):1487-1496.
· Economic Aspects of Potato Production and Consumption in the Kingdom of Saudi ArabiaAbdul-Aziz M. Duwais and Safar H. Al-Kahtani
Department of Agricultural Economics, College of Agriculture, King Saudi University, Riyadh, Saudi Arabia.
Res. Bull., No. (32), Agric. Res. Cent., King Saud Univ., PP., (5-20) 1993
· Economic Analysis of the Saudi Imports of Egyptian OrangeS.M. Ismaiel and A.M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Journal of King Saud University "Agricultural Sciences", Vol (6) No. (1) 1994.
· The Potential for Minimizing Sheep Imports Value to Saudi ArabiaDuwais, A.M. and Mansour, M.M.
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Annals of Agricultural Sciences, Ain-Shams University, Vol. (39) 1994.
· Economic analysis of the structure of demand for imported corn to the Kingdom of Saudi ArabiaAbdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Bull. Fac. Agric., Univ. Cairo, Vol. (45) No. (3) 1994.
· Efficiency in Land and Water Resources Use for Barley Production in Saudi ArabiaAbdul-Aziz M. Duwas
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Alexandria Journal for Agricultural Researches, University of Alexandria, Vol. (39) No. (1) 1994.
· Economic Justification for the Expansion of Vegetable Production in Greenhouses in Saudi ArabiaAbdul-Aziz M. Duwais and Ahmed Helmi S. Hassan
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Journal of King Saud Univ. "Agricultural Sciences", Vol. (7) No. (2) 1995.
· The Production Function for the Feed Processing Industry in the Kingdom of Saudi Arabia.
Abul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Res. Bult., No. (55), Agr. Res. Cent., King Saud Univ., PP., (5-20) 1995.
· The Production and Marketing Problems Facing Vegetables Production from-Greenhouse Projects in the Riyadh and Kharj AreaA. M. Duwais, B. Safyan and S. M. Esmail
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Bull. Fac. Agric., Univ. Cairo, 47 (1996):191-212
· Demand for Tobacco (Cigarette), and the Effect of Customs Raising Upon it in Saudi ArabiaDr. Abdul-Aziz M. Duwais, Mr. Ahmed Helmi M.S. Hassan
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Assiut Journal of Agricultural Sciences, Vol. 27, No. 4, 1996
· The Economics of Rationing Sheep Consumption of Barley and its Impact on Barley Subsidy in Saudi ArabiaA.A.M. Duwais and A.M Elhendy
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Bull. Fac. Agric., Univ. Cairo, 48 (1997):435-454.
· Cost and Returns of Forage Production in the Central Region of Saudi ArabiaAbdul-Aziz M. Duwais and Sobhy M. Ismaiel
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Journal of King Saud University "Agricultural Sciences" Vol. (9) PP. 49-67 (1997)
· Some Direction for Barley Studies Reductions in Saudi Arabia: Economic StudyAbdul-Aziz A. Al-Zoom, Abdul-Aziz M. Duwais, Ahmed M. Al-Hendy
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
J. Agric Sci., Cairo Univ., Vol. (48) 1997.
· Linear Programming Analysis of Fish Feed Costs for Intensive Culture Systems in Saudi ArabiaAbdul-Aziz Al-Duwais and Hussien A. Hebicha
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
J. King Saud Univ., Vol. 10, Agric. Sci. (1), pp 3-15, Riyadh (1418/1998)
· Economic Analysis of Livestock Production in Rumah Rangeland AreaAl-Hamoudi, K.A.1; A.M Assaeed2; A,M. Duwais1 and B.E. Sofian1
1Agricultural Economics Department, 2Plant Production Department, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Arab Univ. J. Agric. Sci., Ain-Shams Univ., Cairo, 6(2), 641-662, 1998
· Economics of Local Fish Production at Saudi Arabia; A Future ViewA.M. Elhendy, and A.M. Elduwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Bull. Fac. Agric., Univ. Cairo, 49 (1998:185-202).
· Determination of the Optimum Herd Size and the Structure of Livestock Production: Case of Rumah Rangeland Area
Determination of the Optimum Herd Size and the Structure of Livestock Production.docxA.M. Duwais*, A.M. Assaed, K.A. Al-Hamoudi, and B.E. Sofian
Agricultural Economics Department and Plant Production Department, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Alex. J. Agric. Res. 43(3) 45-56, 1998.
· The Optimum Transportation and Distribution Plans for the Saudi Fisheries CompanyAbdul-Aziz M. Duwais, S.M. Ismaiel, and A. Al-Hawwas
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Dirasat, (Agricultural Sciences), Univ. of Jordan, Vol. (25) 1998.
· Economic Analysis of Import Demand for Poultry Meat in the G.C.C. CountriesAbdul-Aziz M. Duwais, Sobhy M. Ismaiel, Mohammad Al-Qunaibet, and Mohammed Al-Omair
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Dirasat, (Agricultural Sciences), Univ. of Jordan, Vol (6), 1999.
· Analysis of the Government Subsidy on Milk Production in Saudi Arabia Using Policy Analysis MatrixAbdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saud University, Riyadh, Saudi Arabia
Bull. Fac. Agric., Cairo Univ., Vol. (50) 1999.
· Potato in Saudi Arabia: Between Production Expansion and Conserving ResourcesAbdul-Aziz M. Duwais*, Abdullah A. Alsadon**, and Mostafa M. Masnsour*
*Department of Agricultural Economics, **Department of Plant Production, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
Alex. J. Agric. Res., Coll. Agric., Alex. Univ., Egypt, Vol. (44) 1999.
· An Application of the Almost Ideal Demand Systems to International Trade in Apple, Saudi ArabiaAbdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saudi University, Riyadh, Saudi Arabia.
Arab Univ. J., Agric. Sciences, Ain-Shams Univ., Vol. 7, 1999.
· A Motad Approach to Risk Management Strategies for Table-Egg Projects at the Central Region of Saudi ArabiaAbdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saudi University, Riyadh, Saudi Arabia.
Alex. J. Agric. Res., Coll. Agric., Alex. Univ., Egypt, Vol. (44), 1999.
· Estimation of Technical Production Efficiency of Honey Using Stochastic Frontier Production FunctionAbdul-Aziz M. Duwais
Department of Agricultural Economics, College of Agriculture, King Saudi University, Riyadh, Saudi Arabia.
Journal of King Saud University "Agricultural Sciences", Vol. (12) 2000.
· Economic Analysis of Structure and Performance of Dates Relating Outlets in Riyadh Region.Abdul-Aziz M. Duwais, Sobhy M. Ismail, Fehaid Al-Quhtani
Department of Agricultural Economics, College of Food and Agricultural Sciences, King Saudi University, Riyadh, Saudi Arabia.
Res. Built. No. (163), Food Sci. & Agric. Res. Center, King Saud Univ., pp. (5-21) 2008.
· Cost of Production Structure of Sukkari Dates in Qassim Region.
Sobhy M. Ismail, Abdul-Aziz M. Al-Duwais and Mohamed A. Al-Elaiwy
Department of Agricultural Economics, College of Food and Agricultural Sciences, King Saudi University, Riyadh, Saudi Arabia.
J. King Saud Univ., Vol. 20, Agric. Sci. (2). Riyadh (2008/1429H).
Sobhy M. Ismail, Abdul-Aziz M. Al-Duwais and Mohamed A. Al-Elaiwy
Department of Agricultural Economics, College of Food and Agricultural Sciences, King Saudi University, Riyadh, Saudi Arabia.
J. Saudi Soc. For Agric. Sci., Vol. 8, No. 1:2009.
· Khodran Zahrani, Safar Al-Kahtani, Imad El-Shafei, Abdel-Hamed "changing pattern Consumer input of water demand management and rational use in the Kingdom Saudi Arabia, a research project funded by the King Saud University.
· Safar Hussein Al-Kahtani, and Mustafa Mansur "econometric analysis of the function of the demand for imports of tea, Saudi Arabia," the magazine Alexandria Agricultural Research, College of Agriculture, University of Alexandria, volume 37, number No. (1) 1992.
· Safar Hussein Al-Kahtani, Abdel Aziz AlDowes "derived demand for chemical fertilizers in Saudi Arabia," the scientific journal of the Faculty of Agriculture, Cairo University, vol (43), number (24), 1992.
· Abdel Aziz AlDowes, Al-Kahtani Safar "feature of economic production and consumption of potatoes in Saudi Arabia" Agricultural Research Center, Agriculture magazine, King Saud University, (32), 1993.
· Yusuf Al-Amry, Safar Al-Kahtani, Subhi Ismail, Shawki before "The fact of the use of agricultural machinery in the grain farms in Saudi Arabia", King Saud University, Research Center College of Science of Food and Agriculture, 1426 H.
· Safar Al-Kahtani, Mohammed ElFeel "margins for marketing of vegetables and fruit crops, Saudi Arabia," the Saudi General of Agricultural Sciences, University of King Saud, 1427 H.
· Safar Al-Kahtani, Mohammed ElFeel "marketing costs for some vegetables and fruit crops, Saudi Arabia," the magazine Alexandria for the exchange of scientific, University of Alexandria, volume 27, No. 1, 2006.
· Yousef Al-Amry, Safar Al-Kahtani, Subhi Ismail, Shawki Emam "analyze the performance costs mechanization of agriculture in the area grain farmer Riyadh, Saudi Arabia," King Saud University Journal, agricultural sciences, 1426 H.
· Safar H. AL-Kahtani, and D. Schreiner. "Policy Analysis of the Wheat Commodity Market in Saudi Arabia. "Agri. Res. Center, Coll., Of Agr. , King Saud Univ., Res. Bull. No. 23 (1992).
· Safar H. AL-Kahtani. "Complete Aggregated Demand Elasticities for Economic Sector in Saudi Arabia." J. King Saud Univ., Admin. , Sci., Vol. 6, No.1 (1993).
· Safar H. AL-Kahtatni, and D. Schreiner. "Composite Food Demand System for Saudi Arabia." J. King Saud Univ. , Agri. , Sci. , Vol. 7, No. 1 (1994).
· Safar H. AL-Kahtatni, and D. Schreiner. "Using Linear Programming Techniques to Construct a General Equilibrium Model (GEM) for Saudi Arabia." J. King Saud Univ. , Agri. , Sci. , Vol. 5, No. 1 (1993).
· Safar H. AL-Kahtatni. "Induced Technical Change in Agricultural Development in Saudi Arabia." J. King Saud Univ. , Vol. 6, No. 2 (1993).
· Safar H. AL-Kahtatni. "Optimum Wheat Production in Saudi Arabia." J. King Saud Univ. , Vol. 6, (1992).
· Safar H. AL-Kahtatni, and B. Sofian. "A New Method of Estimating Stochastic Production Functions." WAEA , U.S.A., (1995)
· Safar AL-Kahtani, and B. Sofian. "Estimating Preference Change in Meat Demand in Saudi Arabia." IAAE, 12 (1995).
· Sheriff, S. , And S. Al-Kahtani. "Managerial Efficiency under Risk for Broilers Producers in Saudi Arabia." IAAE (1996).
· Safar AL-Kahtani, and H. Hebicah "A Target MOTAD Analysis of Tomato Production Practices in the Riyadh and Kharj Area" Agri. Res. Center, Coll., Of Agr. , King Saud Univ., Res. Bull. No.64 (1997).
· Safar H. AL-Kahtatni, and B. Sofian." Ranking Method of Measuring a Specific Farm Technical Inefficiency." Bull. Fac. Agric., Univ. Cairo. 48, 1997.
· Safar H. AL-Kahtatni. "A Rotterdam and Liner Approximation of Almost Ideal System to International Trade in Rice , Saudi Arabia. : J. King Saud Univ. , Vol. 10, (1998).
· Al-rwis, Khalid . An Analytical Study for Cost of Production in Meat Industry In K.S.A.Egyptian J. Appl. Sci. , Egypt, (2002), 17 (12): pp., (347-357).
· Al-rwis, Khalid and E. Francis. Technical, Allocative, and Economic Efficiencies of Broiler Farms in the Central Region of Saudi Arabia: Data Envelopment Analysis Approach. J. Saudi Soci. of Agric. Sci., Saudi Arabia, (2003), 1(2):pp.,(73-99).
· Al-rwis, Khalid. and E. Francis (2003).Technical Efficiency of Broiler Farms in the Central Region of Saudi Arabia: Stochastic Frontier Approach. Agric.Res.Center, King Saud Univ., College of Food & agricultural sciences. Saudi Arabia, (2003), Bull., No.(116):pp.,(5-34)
· Al-rwis, Khalid . Actual and Targeted Wheat Production and Consumption in Saudi Arabia.J. Agric. Sci. Mansoura Univ., Egypt (2003), 6(28): pp.,(4547-4556).
· Adel K., and Khalid Alrwis . Current and Suggested Cropping Pattern with Respect to the Water Security in Saudi Arabia. J. King Saud Univ. Agric. Sci., Saudi Arabia, (2004), 1(17):pp., (19-44).
· Hussien A. Hebicha, and Khalid AL-Rwis. Spatial Price Linkages for Some Agricultural Products in K. S. A. Regional Markets. Al-azhar journal of Agricultural Research (2006) 43.
· Al-rwis, Khalid and Othman Al-Nashwan. The Effects of Pursuing the Organic Farming of Onion Product on the Saudi Agricultural Economics. J. King Saud Univ. Agric. Sci., Saudi Arabia, (2007), 1(19):
· Al-rwis, Khalid. and Ahmed M. Elhendy. Measurement of Productivity Changes in Traditional Fishery Sector at Red Sea, Saudi Arabia: The Malmquist Productivity Index Approach. Journal of the Saudi Society of Agricultural Sciences. Saudi Arabia (2007), 2 (6):pp: (87-99).
