Results 321 to 330 of about 24,063,572 (372)
Some of the next articles are maybe not open access.
Evidence-based medicine III: level of evidence
Journal of Pediatric Urology, 2019The present article is the third installment in a five-part series related to evidence-based medicine (EBM) provided by the European Society for Paediatric Urology Research Committee. It will present the different levels of evidence (i.e. systematic review, randomized controlled trial, cohort study) available to clinicians and researchers and describe ...
Nicolas Kalfa +8 more
openaire +4 more sources
A theater level simulation with COMO-III
Computers & Operations Research, 1976Abstract A computerized modeling system is described which presents the analysis of a large number of interacting units operating at various levels of managerial control. The COMO-III system employs a “tool kit” approach to modelling by providing great flexibility in fitting the various parts of the model together.
M. Leiser, Mark Aitken, J. Dockery
openaire +2 more sources
1988
As noted in Chapter 7, Level III systems are divided into “hardware types” based upon the equipment in use: microprocessor- and minicomputer-based systems. In Chapter 8, these hardware types will be distinguished from one another under several headings. These include: Computer Technology Peripheral Devices Field Equipment Software
John J. McGowan, F. William Payne
openaire +2 more sources
As noted in Chapter 7, Level III systems are divided into “hardware types” based upon the equipment in use: microprocessor- and minicomputer-based systems. In Chapter 8, these hardware types will be distinguished from one another under several headings. These include: Computer Technology Peripheral Devices Field Equipment Software
John J. McGowan, F. William Payne
openaire +2 more sources
Journal of Navigation, 1957
For a number of purposes it is convenient to have a platform floating at a constant level high up in the atmosphere. This can be contrived by the use of a special arrangement of balloons for heights up to about 100,000 ft. There are at least three ways in which this can be achieved.
openaire +2 more sources
For a number of purposes it is convenient to have a platform floating at a constant level high up in the atmosphere. This can be contrived by the use of a special arrangement of balloons for heights up to about 100,000 ft. There are at least three ways in which this can be achieved.
openaire +2 more sources
NATURAL ŒSTROGENS AND ANTITHROMBIN-III LEVELS
The Lancet, 1975The results are presented of a study of serum-antithrombin-3 levels in 20 women taking oral contraceptives vs. 19 controls 20 menopausal women taking conjugated equine estrogen (Premarin) vs. 20 menopausal controls and 29 women in the third trimester of pregnancy. Antithrombin-3 levels were significantly lowered in the pregnant women and in the women
H.B.W. Greig, M. Notelowitz
openaire +2 more sources
Bismuth(III) levels in the North Atlantic
Marine Chemistry, 1983Abstract Nineteen North Atlantic samples have been analyzed for bismuth(III) by means of magnesium hydroxide co-precipitation and potentiometric stripping analysis. The average bismuth(III) concentration was found to be 12 pM (2.6 ng l −1 ) with a standard deviation of 9 pM.
Stig Westerlund +2 more
openaire +2 more sources
Lifetime measurement of argon III levels
Physics Letters A, 1969Abstract The lifetime of some argon III levels has been measured using the ‘beam foil technique’.
A. Denis, M. Dufay
openaire +2 more sources
Level III Automation System Technology [PDF]
, 1988 A Level III Automation or EMC system is also referred to in this book as an engineering control center. This is because these systems perform a central engineering function, similar to the concept of a Level II system, along with automatic control, energy monitoring, maintenance scheduling, information management, life safety and other functions which ...
John J. McGowan, F. William Payne
openaire +1 more source
Specifying a Level III EMC System [PDF]
, 1988 Presenting a complete guide specification for a Level III EMC system is beyond the scope of this book. Appendix D includes references which can provide detailed specifications.
John J. McGowan, F. William Payne
openaire +1 more source
Doubly-excited levels in Al III
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1988Abstract We have used the beam-foil technique to search for transitions between the doubly-excited quartet levels in Al III. These levels, due to excitation of an inner-shell 2p electron, lead to radiation in the range of 900 to 1500 A. Calculations using a multiconfigurational Dirac Fock code have enabled us to propose preliminary identification of ...
Indrek Martinson +5 more
openaire +2 more sources