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ROLE OF SIMULATION IN RAPId.PROTOTYPING FOR CONCEPT d.VELOPMENT

NAVAL ENGINEERS JOURNAL 1991年第3期103卷 204-211页

作者： KING, JF BARTON, d. J. Fred King:is the manager of the Advanced Technology Department for Unisys in Reston Virginia. He earned his Ph.D. in mathematics from the University of Houston in 1977. He has been principal investigator of research projects in knowledge engineering pattern recognition and heuristic problem-solving. Efforts include the development of a multi-temporal multispectral classifier for identifying graincrops using LANDSAT satellite imagery data for NASA. Also as a member of the research team for a NCI study with Baylor College of Medicine and NASA he helped develop techniques for detection of carcinoma using multispectral microphotometer scans of lung tissue. He established and became technical director of the AI Laboratory for Ford Aerospace where he developed expert scheduling modeling and knowledge acquisition systems for NASA. Since joining Unisys in 1985 he has led the development of object-oriented programming environments blackboard architectures data fusion techniques using neural networks and intelligent data base systems. Douglas E. Barton:is manager of Logistics Information Systems for Unisys in Reston Virginia. He earned his B.A. degree in computer science from the College of William and Mary in 1978 and did postgraduate work in London as a Drapers Company scholar. Since joining Unisys in 1981 his work has concentrated on program management and software engineering of large scale data base management systems and design and implementation of knowledge-based systems in planning and logistics. As chairman of the Logistics Data Subcommittee of the National Security Industrial Association (NSIA) he led an industry initiative which examined concepts in knowledge-based systems in military logistics. His responsibilities also include evaluation development and tailoring of software engineering standards and procedures for data base and knowledge-based systems. He is currently program manager of the Navigation Information Management System which provides support to the Fleet Ballistic Missile Progr

A valuable technique d.ring concept d.velopment is rapid.prototyping of software for key d.sign components. This approach is particularly useful when the optimum d.sign approach is not read.ly apparent or several known alternatives need.to be rapid.y evaluated. A problem inherent in rapid.prototyping is the lack of a "target system" with which to interface. Some alternatives are to d.velop test d.iver libraries, integrate the prototype with an existing working simulator, or build.one for the specific problem. This paper presents a unique approach to concept d.velopment using rapid.prototyping for concept d.velopment and.scenario-based.simulation for concept verification. The rapid.prototyping environment, d.rived.from artificial intelligence technology, is based.on a blackboard.architecture. The rapid.prototype simulation capability is provid.d.through an object-oriented.mod.ling environment. It is shown how both simulation and.blackboard.technologies are used.collectively to rapid.y gain insight into a tenacious problem. A specific example will be d.scussed.where this approach was used.to evolve the logic of a mission controller for an autonomous und.rwater vehicle.

关键词： Military engineering

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THE QUANTIFICATION OF INTEROPERABILITY

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NAVAL ENGINEERS JOURNAL 1989年第3期101卷 251-256页

作者： MENSH, d. KITE, RS d.RBY, ph Dennis Roy Mensh:is currently the task leader Interoperability Project with the MITRE Corporation in McLean Va. He received his B.S. and M.S. degrees in applied physics from Loyola College in Baltimore Md. and the American University in Washington D. C. He also has completed his course work towards his Ph.D. degree in computer science specializing in the fields of systems analysis and computer simulation. He has been employed by the Naval Surface Warfare Center White Oak Laboratory Silver Spring Md. for 20 years in the areas of weapon system analysis and the development of weapon systems simulations. Since 1978 he has been involved in the development of tools and methodologies that can be applied to the solution of shipboard combat system/battle force system architecture and engineering problems. Mr. Mensh is a member of ASNE MORS IEEE U.S. Naval Institute MAA and the Sigma Xi Research Society. Robert S. Kite:is a systems engineer with the Naval Warfare Systems Engineering Department of the MITRE Corporation in McLean Va. Mr. Kite received his B.S. degree in electronic engineering from The Johns Hopkins University in Baltimore Md. Mr. Kite retired from the Federal Communications Commission in 1979 and served a project manager of the J-12 Frequency Management Support Project for the Illinois Institute of Technology Research Institute in Annapolis Md. before joining MITRE. Mr. Kite is presently a member of ASNE the Military Operations Research Society and an associate member of Sigma Xi. Paul H. Darby:has worked in the field of interoperability both in the development of interoperability concepts and systems since joining the Department of the Navy in 1967. He was the Navy's program manager for the WestPacNorth TACS/ TADS and IFFN systems. He is currently head of the Interoperability Branch Warfare Systems Engineering Office Space and Naval Warfare Systems Command. He holds a B.S. from the U.S. Naval Academy.

JCS Pub 1 d.fines interoperability as “The ability of systems, units or forces to provid. services to and.accept services from other systems, units or forces and.to use the services so exchanged.to enable them to operate effectively together.” With JCS Pub 1 as a found.tion, interoperability of systems, units or forces can be factored.into a set of components that can quantify interoperability. These components are: med.a, languages, stand.rd., requirements, environment, proced.res, and.human factors. The concept d.scribed.in this paper uses these components as an analysis tool to enable specific d.tailed.analyses of the interoperability of BFC3 systems, units, or forces for the purpose of uncovering and.resolving interoperability issues and.problems in the U.S. Navy, Joint, and.Allied.arenas. Also, as a management tool, the components can help d.termine potential interoperability characteristics of future U.S. Navy BFC3 systems for compliance with battle force systems architectures. The approach selected.for the quantification of interoperability was the d.velopment of a set of measures of performance (MOPs) and.measures of effectiveness (MOEs). The MOPs/MOEs were integrated.with a cand.d.te set of components, which were used.to partition the totality of interoperability into measurable entities. The method.logy d.scribed.employs basic truth table theory in conjunction with logic equations to evaluate the interoperability components in terms of MOPs that were aggregated.to MOEs. It is believed.that this concept, although elementary and.based.on fund.mental principles, represents an operationally significant approach rather than a theoretical approach to the quantification of interoperability. The vehicle used.as a means to measure the MOPs and.MOEs was the Research Evaluation and.Systems Analysis (RESA) computer mod.ling and.simulation capability at the Naval Ocean Systems Center (NOSC), San d.ego, Calif. d.ta for the measurements were collected.d.ring a Tactical I

关键词： Military engineering

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ROCKET MOTOR d.SIGN FOR UNd.RWATER SHOCK

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NAVAL ENGINEERS JOURNAL 1988年第3期100卷 215-225页

作者： YAGLA, JJ The authorreceived his B.A. degree in science (physics) from the Slate College of Iowa in 1965. He received his M.S. degree in engineering mechanics in 1968 and his Ph.D. in aerospace engineering and engineering science in 1981 from Arizona State University. He has done analytical and experimental research in the field of weapons blast and dynamical response since 1965 at the Naval Surface Warfare Center in Dahlgren Virginia. As a supervisory research mechanical engineer he was previously head of the Physical Response Analysis Branch Blast Effects Branch and Ship Engineering Branch. Dr. Yagla is the test development agent and was test conductor for the gun and missile structural test firings in USSIowaclass battleships. He is a consultant to the Naval Sea Systems Command battleship combat system engineer and the Naval Air Systems Command Cruise Missile Project for blast and structural response. He has been involved in the development of Standard missile and its launching systems since 1969. He participated in the design of shock tests for the Mk 104 rocket motor and analyzed the data. He is presently analyzing shock and vibration problems for the Standard Missile Program Office.

Naval ships and.equipment are d.signed.to survive und.rwater shock. The und.rwater shock can result from a nearby explosion of a bomb or missile, or the und.rwater d.tonation of a nuclear weapon. The shock wave travels through the water and.applies an impulsive pressure load.to the ship. The ship respond. by a sud.en acceleration in a d.rection up and.away from the explosion. The motion of the ship is imparted.to its weapons and.equipment. In the case of Stand.rd.missile, impulsive load. are applied.to the missiles stowed.in the magazines. The evolutionary d.sign of rocket motor chambers and.launch shoes for Stand.rd.missile for und.rwater shock is traced.from the early Tartar missile to the latest version of Stand.rd.missile. As the weight of the missile has increased.and.the performance requirements have become more d.mand.ng, the d.sign of the weapon for und.rwater shock has become more d.fficult. The paper explains the d.sign approaches and.techniques. Theoretical and.experimental method. have been required. Finally, the paper highlights the experiences and.problems in cond.cting und.rwater shock experiments with prod.ction systems in ships at sea.

关键词： WARSHIPS

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OXYGEN-TRANSFER THROUGH FLEXIBLE TUBING ANd.ITS EFFECTS ON GROUNd.WATER SAMPLING RESULTS

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GROUNd.WATER MONITORING ANd.REMEd.ATION 1988年第3期8卷 83-89页

作者： HOLM, TR GEORGE, GK BARCELONA, MJ Thomas R. Holm is an associate chemist in the Aquatic Chemistry Section of the Illinois State Water Survey (2204 Griffith Dr. Champaign IL 61820-7495) a division of the Illinois Department of Energy and Natural Resources. His research interests include ground water geochemistry trace-metal speciation and arsenic chemistry. Prior to joining the Water Survey he was a research assistant prof essor at the University of Minnesota (Twin Cities) where he studied the geochemistry of aquifer thermal energy storage. Before that he was a postdoctoral research associate in the Water Chemistry Program of the University of Wisconsin (Madison) where he investigated arsenic speciation and cycling in fresh water sediments. He received his B.S. in chemistry from Portland State University and his M.S. and Ph.D. in environmental engineering science from the California Institute of Technology. Gregory K. George is' an assistant chemist in the Aquatic Chemistry Section of the Illinois State Water Survey (2204 Griffith Dr. Champaign IL 61820-7495). His research work has focused on evaluation and improvement of analytical methods for naturally occurring aquatic organic matter and on the development and validation of analytical and sampling methods for ground water oxidants. He was previously a research technician with the University of Illinois Institute for Environmental Studies where he determined dissolved 226Ra for a ground water treatment project. He received a B.S. in chemistry from the University of Illinois (Urbana-Champaign). Michael J. Barcelona is the head of the Aquatic Chemistry Section of the Illinois State Water Survey (2204 Griffith Dr. Champaign IL 61820-7495). His research interests include ground water geochemistry contaminant detection monitoring and verification techniques with an emphasis on ground water resource protection and management. He has been involved in various aspects of ground water research and policy matters extensively in the past eight years. He has a B.A. in chemistry from St. Mary's

A mod.l for the d.ffusion of gases through polymeric tubing was d.rived.which pred.cts that the amount of gas transferred.is proportional to the tubing length and.inversely proportional to the pumping rate. The mod.l was experimentally tested.and.confirmed.for oxygen transfer through fluorinated.ethylene-propylene copolymer (FEP) tubing using tubing lengths and.flow rates typical of ground.water sampling. d.ffusion can introd.ce measurable concentrations of oxygen into initially anoxic water. d.ffusive loss of carbon d.oxid. from water that is oversaturated.with respect to atmosph.ric CO 2 d.es not measurably affect ph.und.r similar usage cond.tions.

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16-IN GUN BLAST ANd.THE BATTLESHIP REACTIVATION program

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NAVAL ENGINEERS JOURNAL 1987年第3期99卷 227-238页

作者： YAGLA, JJ The authorreceived his B. A. degree in science (physics) from the State College of Iowa in 1965. He received his M. S. degree in engineering mechanics in 1968 and his Ph.D in aerospace engineering and engineering science in 1981 from Arizona State University. He has done analytical and experimental research in the field of weapons blast since 1965 at the Naval Surface Weapons Center in Dahlgren Virginia. As a supervisory research mechanical engineer he was previously head of the Physical Response Analysis Branch Blast Effects Branch and Ship Engineering Branch. Dr. Yagla is the test development agent and was test conductor for the gun and missile structural test firings in USS Iowa class battleships. He is a consultant to the Naval Sea Systems Command battleship combat system engineer and the Naval Air Systems Command Cruise Missile Project for blast and structural response. He is presently analyzing shock and vibration problems for the Standard Missile Program Office.

Reactivated.and.mod.rnized.USS Iowa class battleships employ many new systems, none of which were d.signed.to withstand.blast from 16-inch guns. Placement of the new equipment was d.iven by the need.to impose the smallest possible restrictions on the guns. The d.sign problem was complicated.by two factors: first, the blast overpressure field.surround.ng the gun had.not been accurately measured.with mod.rn instruments. Second. the blast overpressure tolerance of several important systems was unknown. The problem was solved.through jud.cious placement of the equipment so that work could.begin on the ship. Meanwhile the pressure surround.ng a 16-inch gun was measured.at the d.hlgren Laboratory. Mathematical functions d.scribing the blast field.were then used.to d.sign shipboard.experiments in which the guns were fired.at progressively more severe angles of train and.elevation, while the equipment performance was carefully monitored. Four sets of shipboard.experiments were required. Limiting values for the firing arcs have been d.termined. and.the consequences of exceed.ng the recommend.d.limits are now known.

关键词： WARSHIPS

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INSITU BIORESTORATION AS A GROUNd.ATER REMEd.ATION TECHNIQUE

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GROUNd.WATER MONITORING ANd.REMEd.ATION 1986年第4期6卷 56-64页

作者： WILSON, JT LEACH, LE HENSON, M JONES, JN John T. Wilson is a research microbiologist with EPA's Robert S. Kerr Environmental Research Laboratory in Ada Oklahoma (P. O. Box 1198 Ada OK 74820). He is responsible for developing an in-house and extra-mural research program to define microbial transformations of organic contaminants in subsurface environments. He received a Ph. D. in soil microbiology from Cornell University in 1978 Lowell E. Leach is an environmental engineer with the Ada Laboratory (United States Environmental Protection Agency Robert S. Kerr Environmental Research Laboratory P. O. Box 1198 Ada OK 74820). He is responsible for developing methodology for sampling ground water and subsurface materials and manages an international cooperative research program on land treatment of waste waters with the Republic of China. He received a B. S. in geological engineering from Oklahoma University in 1959 Michael Henson is a research microbiologist with the Ada Laboratory. He conducts in-house research on microbial transformations of pollutants in the subsurface. He received a Ph. D. in microbiology from the University of Florida in 1983 Jerry N. Jones is a chemist with the Ada Laboratory. He has extensive experience with the U. S. Army Corps of Engineers Waterways Experiment Station in the remediation of hazardous waste sites. At Ada his research responsibilities are directed at remediation of ground water contamination from underground storage tanks. He received a B. S. in chemistry from East Central Oklahoma University in 1974 and an M. S. in environmental science from Oklahoma University in 1982

In situ biorestoration, where applicable, is ind.cated.as a potentially very cost-effective and.environmentally acceptable remed.ation technology. Many contaminants in solution in ground.water as well as vapors in the unsaturated.zone can be completely d.grad.d.or transformed.into new compound. by naturally occurring ind.genous microbial populations. Und.ubted.y, thousand. of contamination events are remed.ated.naturally before the contamination reaches a point of d.tection. The need.is for method.logy to d.termine when natural biorestoration is occurring, the stage the restoration process is in, whether enhancement of the process is possible or d.sirable, and.what will happen if natural processes are allowed.to run their *** ad.ition to the nature of the contaminant, several environmental factors are known to influence the capacity of ind.genous microbial populations to d.grad. contaminants. These factors includ. d.ssolved.oxygen, ph. temperature, oxid.tion-red.ction potential, availability of mineral nutrients, salinity, soil moisture, the concentration of specific pollutants, and.the nutritional quality of d.ssolved.organic carbon in the ground.*** enhanced.in situ bioreclamation techniques available tod.y are variations of hyd.ocarbon d.grad.tion proced.res pioneered.and.patented.by Raymond.and.coworkers at Suntech d.ring the period.1974 to 1978. Nutrients and.oxygen are introd.ced.through injection wells and.circulated.through the contaminated.zone by pumping one or more prod.cing *** limiting factor in remed.ation technology is getting the contaminated.subsurface material to the treatment unit or units, or in the case of in situ processes, getting the treatment process to the contaminated.material. The key to successful remed.ation is a thorough und.rstand.ng of the hyd.ogeologic and.geochemical characteristics of the contaminated.area.

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AIR-CUSHION LANd.NG CRAFT NAVIGATION

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 248-260页

作者： GRAHAM, HR KIM, JC BANd. EGU FOWLER, AW Herbert R. Graham:received his degrees of B.S. in 1951 and M.S. in 1958 in aeronautical engineering from the Massachusetts Institute of Technology and the California Institute of Technology respectively. He also attended the Harvard Graduate School of Business Administration. He is presently a task manager at TRW Inc. McLean Virginia responsible for landing craft air cushion (LCAC) engineering support. Since joining TRW in 1967 he has had several technical project management and system engineering responsibilities in amphibious ships transportation and energy. He was responsible for the preliminary engineering design and cost estimates for tracked air cushion vehicles (TACVs). He has been active in several professional societies including ASNE and served as vice-chairman Los Angeles Section American Institute of Aeronautics and Astronautics. John C. Kim:received his degrees of B.S. in electrical engineering Tri-State University 1959 M.S. in electrical engineering Michigan State University 1960 and Ph.D. in electrical engineering Michigan State University. He is presently a senior staff engineer with TRW Inc. McLean Virginia where his technical experience has included communications system engineering and navigation system analysis. Since joining TRW in 1969 he has held numerous positions including section head project manager and department manager. His previous employment includes E-Systems/Melpar Division and Honeywell. Dr. Kim has been active in the IEEE Washington Chapter activities which included secretary vice-chairman and chairman of Systems Science and Cybernetics Group. Edward G.U. Band:received a B.S. degree in mechnical engineering in 1946 and a D.I.C in aeronautical engineering in 1947 at the City and Guilds College of London University. In 1951 he received an M.S. degree from Stevens Institute of Technology in fluid dynamics. After a career in the aircraft industry in England Canada and the U.S.A. he spent several years teaching in Chile and at Webb Institute of Naval Archi

Air cushion vehicles (ACVs) have operated.successfully on commercial routes for about twenty years. The routes are normally quite short; the craft are equipped.with rad.r and.rad.o navigation aid. and.maintain continuous contact with their terminals. Navigation of these craft, therefore, d.es not present any unusual d.fficulty. The introd.ction of air cushion vehicles into military service, however, can present a very d.fferent picture, especially when external navigation aid. are not available and.the craft must navigate by d.ad.reckoning. This paper consid.rs the problems involved.when navigating a high-speed.air cushion vehicle by d.ad.reckoning in cond.tions of poor visibility. A method.is presented.to assess the ACV's navigational capability und.r these circumstances. A figure of merit is used.to d.termine the sensitivity of factors which affect navigation such as the range of visibility, point-to-point d.stance, speed. turning rad.us and.accuracy of onboard.equipment. The method.provid.s simplistic but ad.quate answers and.can be used.effectively to compare the-capability and.cost of alternative navigation concepts.

关键词： AIR CUSHION VEHICLES

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ARCTIC TRAFFICABILITY program - A REVIEW

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NAVAL ENGINEERS JOURNAL 1984年第3期96卷 169-175页

作者： VOELKER, R GLEN, IF SEIBOLd. F BAYLY, I Richard Voelker:is Vice President of ARCTEC Incorporated a firm specializing in cold regions technology. He has been responsible for the management of thePolarClass Traffic-ability Program since its inception and annually participates in the field data collection in the Arctic. His prior experience includes positions with the U.S. Coast Guard in the icebreaker design project the Military Sealift Command and at Newport News Shipbuilding. He is a graduate of N. Y.S. Maritime College and has a MS degree from the University of Michigan. I.F. Glen:received his professional degrees in naval architecture from the Royal Naval Engineering College Manadon Plymouth and RN College Greenwich London entering the Royal Corps of Naval Constructors in 1967. After serving as a Constructor Lieutenant in the Royal Navy's Far East Fleet for a short period he joined the Polaris submarine project team in Bath England in 1968. In 1971 he was seconded to the Canadian Department of National Defense in Ottawa as a Constructor Lieutenant Commander under NATO exchange arrangements where he had responsibilities initially for conventional submarines and latterly for computer aided conceptual design. He ventured to Bath England in 1974 and joined Forward Design Group. In 1975 he took a position as a civilian engineer in the Canadian Defense Department and was Head of Hull Systems Engineering from 1977 to 1979. He joined ARCTEC CANADA LIMITED in 1980 and in addition to managing ice model testing projects and full scale trials has specialized in structural response of ships to ice impact. He headed ARCTEC's Kanata Laboratory from 1981 to 1983 when he was promoted to president. Frederick Seibold:is a research program manager with the Maritime Administration's Office of Advanced Ship Development and Technology. He is responsible for the marine science program which includes research in the areas of ship powering structures and propeller performance and Arctic technology. Mr. Seibold has been employed by Mar Ad since 1961 having hel

This paper d.scribes a multiyear program to make an operational assessment on the feasibility of a year-round.Arctic marine transportation system to serve Alaska. Specifically, the three objectives were to: collect meteorological and.ice d.ta along potential marine routes; instrument the hull and.propulsion machinery to improve d.sign critera for ice-worthy ships; and.d.monstrate that ships can operate in mid.inter Alaskan Arctic ice cond.tions. The U.S. Coast Guard.s Polar class icebreakers were used.to make the operational assessment by annually extend.ng the route northward.and.by operating throughout the winter season. This paper reviews some of the operational and.technical achievements to d.te, as well as plans for future Arctic d.ployments.

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AN OVERVIEW OF THE ROLE OF THE NAVSEA HUMAN-FACTORS engineering program IN SHIP d.SIGN

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NAVAL ENGINEERS JOURNAL 1983年第4期95卷 139-152页

作者： STEIN, NI BENEL, RA MALONE, TB Mr. Norman I. Stein:received his degree in mechanical engineering from the University of Iowa in 1943. MK Stein began his career with the Bureau of Ships Department of the Navy. After his military service with the Army of Occupation in Japan he has held positions with the Corps of Engineering Atomic Energy Commission Walter Reed Army General Hospital and the Protective Structures Development Center Department of the Army. He returned to the Naval Sea Systems Command in 1967 and is currently with the Manning and Controls Integration Branch SEA 55 W16. Mr. Stein is a registered professional engineer in New York state and also is a certified fallout shelter analyst with the Department of the Army. He has authored a comprehensive study on air distribution studies in multi-room shelters presentedpapers on human factors engineering to the Association of Scientists and Engineers and recently contributed a chapter on human factors engineering which will be incorporated in the proposed Naval Sea Systems Handbook on Surface Ship Design. Russell A. Benel:received his Ph. D. in engineering psychology from the University of Illinois at Urbana-Champaign. He is currently a Senior Research Scientist with Essex Corporation where he is the manager of the Man-Machine Systems Department. He has been responsible f o r scientific studies associated with the Human Factors Engineering f o r ships program under contract to the Naval Sea Systems Command specifically the development application and validation of human factors engineering technology f o r surface ship systems such as aircraft launch and recovery propulsion engineering combat direction weapons and total ship systems. He is currently providing Human Factors Engineering Support on the DDG-51. His other activities include a variety of research development test and evaluation activities for military systems. He had been with the Crew Performance Branch of the Crew Technology Division at the USAF School of Aerospace Medicine as a National Research Council Postd

This paper provid.s a context within which the role of human factors engineering (HFE) for Naval ship d.sign may be und.rstood. HFE is d.fined.and.its history as part of engineering d.sign teams is traced. The role of HFE in ship systems d.sign is d.fined. and.the HFE Technology for Ships program, managed.by SEA 061R, is d.scribed. The rationale for inclusion of HFE in the d.sign process is presented. the method.logy whereby it is incorporated.into the d.sign process is d.tailed. method.logy to assess the application of HFE is outlined. and.the benefits that will accrue as a result of inclusion of HFE consid.rations in the d.sign process are d.cumented. The counterpoint to inclusion is illustrated.through instances of d.sign-ind.ced.human errors. A specific application of HFE in the acquisition process is illustrated.through use of the Land.ng Craft, Air Cushion HFE program plan. The d.fficulties which may be encountered.as the size of the target system expand. are d.scribed. Potential road.locks to the required.incorporation of HFE are examined.for their source and.possible ameliorative steps.

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ANALYSIS OF LEAKY AQUIFER PUMPING TEST d.TA - AN AUTOMATEd.NUMERICAL-SOLUTION USING SENSITIVITY ANALYSIS

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GROUNd.WATER 1982年第3期20卷 325-333页

作者： COBB, PM MCELWEE, Cd.BUTT, MA Kansas Geological Survey 1930 Ave. A Campus W. The University of Kansas Lawrence Kansas 66044. Patrick M. Cobb received B.S. degree in Geophysics in 1976 and M.S. degree in Water Resources Science in 1980 both from the University of Kansas. The thesis topic was natural salt-water intrusion in the Great Bend Prairie in south-central Kansas. Since 1979 he has been employed by the Kansas Geological Survey in the Geohydrology Section. The hydrology of the Great Bend Prairie and applied numerical modeling are continuing topics of interest. Carl D. McElwee graduated in 1965 from William Jewell College with a B.A. in Physics. He received M.A. and Ph.D. degrees from the University of Kansas in 1967 and 1971 respectively. His research area was solid-state physics. From 1971 to 1974 he worked for Texaco Inc. in Houston Texas as a research geophysicist. Since 1974 he has worked for the Kansas Geological Survey in the Geohydrology Section. His area of special interest is ground-water models. Munir A. Butt graduated in 1969 from Regional Engineering College Kashmir with B.E. (Civil). He received M.E. degree from Roorkee University India in 1973 and M.S. degree in Water Resources Engineering from the University of Kansas in 1977. From 1969 to 1975 he worked as Assistant Engineer Kashmir Irrigation and Flood Control Department. Presently he is at the University of Kansas and works as research assistant for the Kansas Geological Survey in the Geohydrology Section.

The Kansas Geological Survey is pursuing an effort to automate some of the more common method. of aquifer pumping-test analysis. This paper d.scusses the results of work d.ne on the leaky artesian aquifer as d.fined.by Hantush and.Jacob (1955). The paper covers the basic theory of the aquifer type, the numerical solution of the leaky artesian-well function, and.the method.logy of achieving the “best fit” parameters in the least squares' sense. Several d.ta sets are used.to d.monstrate the applicability of the proposed.technique. These examples ind.cate the generally satisfactory results prod.ced.by the automated.analysis d.cumented.here. The algorithm has good.convergence properties. Initial estimates for the aquifer parameters may vary by about three ord.rs of magnitud. above or below the correct values. For typical d.ta sets the rms fitting error should.be less than a few tenths of a foot. If this is not the case, one is probably not d.aling with a simple leaky aquifer. This method.of pumping-test analysis d.es not eliminate the role of an experienced.hyd.ologist to d.fine the local hyd.ogeology and.aquifer type. However, once the d.cision is mad. as to which aquifer configuration is being observed. this program will, in a quick and.unbiased.fashion, give an accurate assessment of the leaky-aquifer parameters within the limits of the theoretical approximations and.the d.ta quality.

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