A Strategic Approach to the Implementation of Precision Agriculture Principles in Cash Crop Farming

Precision agriculture is one of the important agricultural technologies that can assist farmers and managers in promoting long-term success. Precision agriculture can help farm managers increase their management capacity, which is of utmost importance in the highly competitive modern agriculture. Increased yields and/or efficient input use can also be achieved with precision agriculture. Precision agriculture also involve a large capital outlay and requires skills in interpreting the masses of generated data. Modern farmers have to engage in pro-active thinking with regard to suitable agricultural systems that can enhance sustainable success of their farming businesses. Farm managers who are contemplating on getting involved in precision agriculture need to undergo a paradigm shift or a mind shift. This paper proposes a set of guidelines on how the process of implementing precision agriculture can be strategically approached in a holistic way.Precision agriculture, Strategic approach, Farming, Farming success, Crop Production/Industries, Research and Development/Tech Change/Emerging Technologies,

Important factors in the maximum likelihood analysis of flight test maneuvers

The information presented is based on the experience in the past 12 years at the NASA Dryden Flight Research Center of estimating stability and control derivatives from over 3500 maneuvers from 32 aircraft. The overall approach to the analysis of dynamic flight test data is outlined. General requirements for data and instrumentation are discussed and several examples of the types of problems that may be encountered are presented

Flight-determined stability and control coefficients of the F-111A airplane

A complete set of linear stability and control derivatives of the F-111A airplane was determined with a modified maximum likelihood estimator. The derivatives were determined at wing sweep angles of 26 deg, 35 deg, and 58 deg. The flight conditions included a Mach number range of 0.63 to 1.43 and an angle of attack range of 2 deg to 15 deg. Maneuvers were performed at normal accelerations from 0.9g to 3.8g during steady turns to assess the aeroelastic effects on the stability and control characteristics. The derivatives generally showed consistent trends and reasonable agreement with the wind tunnel estimates. Significant Mach effects were observed for Mach numbers as low as 0.82. No large effects attributable to aeroelasticity were noted

Herbert T. Silsby II Correspondence

Entries include brief biographical information and typed letters of presentation on the Law Offices of Silsby & Silsby stationery

Caroline T. Daniels Correspondence

Entries include the typed transcripts of letters from the Maine State Library on the presentation of an inscribed book and concerning an article in the Portland Press Herald

Index of Surnames of Arundel Records (Kennebunkport, Maine)

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