In the paper are presented results regarding the design, simulation and testing of some robotized structures with parallel kinematics in order to identify appropriate simulation techniques and to reveal the properties...
In this paper, a new simulation program for the workspace analysis of parallel robots is presented. The system consists of modules, which enable a complex study of the parallel structures. A special method for generat...
This paper describes a modularized AI system being built to help improve electromagneticcompatibility (EMc) among shipboard topside equipment and their associated systems. cLEER is intended to act as an easy to use i...
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This paper describes a modularized AI system being built to help improve electromagneticcompatibility (EMc) among shipboard topside equipment and their associated systems. cLEER is intended to act as an easy to use integrator of existing expert knowledge and pre-existing data bases and large scale analytical models. Due to these interfaces; to the need for portability of the software; and to artificial intelligence related design requirements (such as the need for spatial reasoning, expert data base management, model base management, track-based reasoning, and analogical (similar ship) reasoning) it was realized that traditional expert system shells would be inappropriate, although relatively off-the-shelf AI technology could be incorporated. In the same vein, the rapid prototyping approach to expert system design and knowledge engineering was not pursued in favor of a rigorous systems engineering methodology. The critical design decisions affecting cLEER's development are summarized in this paper along with lessons learned to date all in terms of “how,” “why,” and “when” specific features are being developed.
作者：
cAMPBELL, JSTHE AUTHOR was born in Porterville. Calif.
in 1928 and joined the U.S. Nary in 1945 in the “Aviation Midshipman” Program. He received his designation as a Naval Aviator in 1950 and flew combat missions in Korea while still a Midshipman followed by participation in various operational and training squadrons until 1958 when he completed the Naval Test Pilot School Program. After a tour as an Engineering Test Pilot. he attended the Naval Postgraduate School Monterey. Calif. and was then assigned to the Fleet Computer Programming Center as a part of the NTDS development. Later he had operational tours as CIC Officer in the USS Enterprise and as AAW Officer on the Staff of Commander Task Force SEVENTY-SEVEN in Vietnam. During an interceding tour of duty he was the Program Manager for the TACDEW Training Facilities at San Diego Calif: and Dam Neck Va. After completing his active duty in the U.S. Navy Mr. Campbell joined Logicon Inc. and during the six years with the Tactical and Training Systems Division held various positions including Project Manager Department Head Assistant Director and Division Director prior to leaving in 1976 to join the Assistant Secretary of the Nary for R&D as Special Assistant for Weapons Systems Integration. In 1978 he joined the Staff at the Naval Ocean Systems Center as Associate Director for Command Control and Communications and Acting Head of the C3I Systems Department where he is charged with the development and operation of the C3Systems Integration Test and Evaluation Laboratory.
The increasingly important role of land-based test sites (LBTSs) in military command, control, and communications (c 3 ) is discussed, with particular reference to system integration, R&D, and testing. The LBTS at...
The increasingly important role of land-based test sites (LBTSs) in military command, control, and communications (c 3 ) is discussed, with particular reference to system integration, R&D, and testing. The LBTS at the Naval Ocean Systems center (NOSc), San Diego, is described in detail, and lessons learned from the operation of the and other LBTSe are considered in terms of both their tactical and strategic implications.
Three competing hypotheses are tested regarding determinants of husband"s (vs. wife"s) participation in 12 selected household/child-care activities. The research utilizes interview responses of husbands, alt...
Three competing hypotheses are tested regarding determinants of husband"s (vs. wife"s) participation in 12 selected household/child-care activities. The research utilizes interview responses of husbands, although it compares responses of both husbands and wives in a proportionate stratified area-probability sample from adjacent midwestern cities. The socialization-ideology hypothesis receives the strongest, albeit modest, support of the three hypotheses. Only marginal support is found for the relative husband/wife resources hypothesis, emphasizing professional employment of wives. No support is found for the time-availability hypothesis. Implications for the further integration of work and family roles for men are considered.
作者：
FRANcIS, cARUTGER, JNPALMER, AFEGraduate assistant (current address: Programa Maiz y Sorgo
C.N.I.A. I.C.A. Apartado Aereo 51764 Medellin Columbia) Assistant Professor and graduate assistant (now Post-doctoral Fellow CIMMYT Apartado Postal 6-641 Mexico 6 D.F. Mexico). The authors wish to acknowledge the encouragement and assistance of Professor C. O. Grogan Department of Plant Breeding and the programming by Mrs. Anne Parkhurst Computer Activities Group Cornell University.
Total plant leaf area of individual maize plants ( Zea mays L.) at anthesis was estimated by multiplying the area of leaf number seven, the best estimator in these studies based on correlation analyses, by an appropri...
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Total plant leaf area of individual maize plants ( Zea mays L.) at anthesis was estimated by multiplying the area of leaf number seven, the best estimator in these studies based on correlation analyses, by an appropriate “leaf area factor.” This factor was determined by dividing total plant leaf area by the area of leaf seven, which was the largest or nearly the largest leaf for the 23 genotypes studied. For precise estimation, a factor should be determined for the largest leaf of each genotype or treatment in each population and each year. A very close correlation between estimated and actual leaf areas was observed when the leaf area factor was used. To minimize the error incurred by plant-to-plant variation, at least five plants should be completely measured to determine the leaf area factor for a given genotype. This method of estimation could be applied widely to leaf area measurements in maize and should make it possible to determine leaf areas in yield trials, breeding nurseries, and extensive field tests.
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