بدرالدين ابراهيم محمد سفيان

English Researches:-

• Testing for Returns to Scale in Dairy Farms in Saudi Arabia.
• The Production and Marketing Problems Facing Vegetable-Greenhouse Projects in Riyadh and Kharj Area.
• On B-Content Tolerance Limits for The Balanced Random One-Way Model.
• The Ranking Method for Measuring A specific Farm Technical Inefficiency.
• A Modification Rule On Selection of The Ridge Parameter.
• Eliciting the Least-Risky Pesticide Production Plans for Greenhouse-Tomato Varieties: A Risk Programming Application to Saudi Growers.
• Wheat production in Saudi Arabia between feasibility and efficiency.
• Estimating preference change in meat demand in Saudi Arabia.
• Use of Quadratic Risk Programming in Measuring The Effect  of Recourses Constraints on the Efficiency use of Pesticide in Tomato-Greenhouse Projects in Riyadh and Kharj Area.
• Determination of optimum herd size and structure of Livestock production: Case of Rumah rangeland Area.
• Economic Analysis of The Production and Marketing Problems Facing Poultry Projects in Central Region, Saudi Arabia.
• Financing Broilers' Projects in the Kingdom Between Theory and Reality: Which Deserve More Funds: Large or Small Projects?
• Economic Analysis of Livestock Production in Rumah Rangeland Area.