First- and third-order analysis of aperture stop location in infrared zoom lens systems

1995 ◽  
Author(s):  
Allen Mann
Keyword(s):  
Zoom Lens ◽  
Third Order ◽  
Order Analysis ◽  
Aperture Stop

An approach to combine the second-order and third-order analysis methods for optimization of a Stirling engine

2018 ◽  
Vol 165 ◽  
pp. 447-458 ◽  
Author(s):  
Gang Xiao ◽  
Yiqing Huang ◽  
Shulin Wang ◽  
Hao Peng ◽  
Mingjiang Ni ◽  
...  
Keyword(s):  
Stirling Engine ◽  
Second Order ◽  
Third Order ◽  
Order Analysis ◽  
Analysis Methods

A New Nonslender Ringing Load Approach Verified Against Experiments

1998 ◽  
Vol 120 (1) ◽  
pp. 20-29 ◽  
Author(s):  
J. R. Krokstad ◽  
C. T. Stansberg ◽  
A. Nestega˚rd ◽  
T. Marthinsen
Keyword(s):  
Wave Model ◽  
Second Order ◽  
Wave Load ◽  
Peak Wavelength ◽  
Third Order ◽  
Load Model ◽  
Order Analysis ◽  
First Order ◽  
Load Effects ◽  
Vertical Cylinders

New results from the most recent work within the Norwegian Joint Industry Project (JIP) “Higher Order Wave Load Effects on Large Volume Structures” are presented. A nonslender theoretical model is validated from experiments for two fixed, vertical cylinders with different diameter/peak wavelength ratios. A combination of complete diffraction first-order simulations, sum and difference frequency second-order simulations, and third-order FNV (Faltinsen, Newman, and Vinje, nonlinear long wave model) is implemented in order to develop a simplified and robust ringing load model for a large range of cylinder diameter/peak wavelength ratios. Results from the full diffraction second-order analysis show a significant reduction of second-order loads compared to pure FNV in the wavelength range relevant for ringing loads. The results show improved correspondence with high-frequency experimental loads compared with the unmodified FNV. Results for different cylinder peak wavelength ratios are presented, including validation against experiments. In addition, a few simplified response simulations are carried out demonstrating significant improvements with the modified FNV model.

Modular Third-Order Analysis of Planar Linkages With Applications

1994 ◽  
Author(s):  
Ettore Pennestrí ◽  
Nicola Pio Belfiore
Keyword(s):  
Third Order ◽  
Order Analysis ◽  
Planar Linkages

Abstract This paper reports analysis equations for the computerized third-order analysis of dyads. Such equations are an extension of those reported by C.H. Suh and C.W. Radcliffe. Examples of tracing cubic of stationary curvature and quartic of derivative curvature for multiloop linkages are herein described.

Multi-objective optimization of GPU3 Stirling engine using third order analysis

2014 ◽  
Vol 87 ◽  
pp. 521-529 ◽  
Author(s):  
Somayeh Toghyani ◽  
Alibakhsh Kasaeian ◽  
Seyyed Hasan Hashemabadi ◽  
Morteza Salimi
Keyword(s):  
Stirling Engine ◽  
Multi Objective Optimization ◽  
Third Order ◽  
Order Analysis ◽  
Multi Objective

Third-order analysis of rotatory strengths of f ↔ f transitions in chiral lanthanide systems

1994 ◽  
Vol 83 (5) ◽  
pp. 1011-1020 ◽  
Author(s):  
Lidia Smentek-Mielczarek ◽  
B. Andes Hess
Keyword(s):  
Third Order ◽  
Order Analysis

Contributions of ability and attainment testing in Africa to a general theory of intellect

1969 ◽  
Vol 1 (S1) ◽  
pp. 91-102 ◽  
Author(s):  
S. H. Irvine
Keyword(s):  
General Theory ◽  
Cross Cultural ◽  
Third Order ◽  
Order Analysis ◽  
First Order ◽  
Reasoning Abilities ◽  
The Third ◽  
Factor Analytic ◽  
Similarities And Differences ◽  
Perceptual Styles

SummaryFactor analytic studies in Africa are compared with other cross-cultural investigations into the structure of abilities in different ethnic groups. Similarities and differences are noted; and environmental influences on the acquisition of skills are also summarized. A correlational study of wrong answers to a battery of thirty marker tests given to a group of predominantly Mashona students indicates that efficiency skills of numerical facility and memory remain at the first order of factor extraction, reasoning abilities emerge in second-order analysis, while perceptual styles are present in the third-order level. This study is used to hypothesize, in the context of African systems of thought, the existence of a primary thought mode that asserts itself in conditions involving repeated errors.

scholarly journals RESUMMATION ANALYSIS OF THE τ-DECAY WIDTH USING THE FOUR-LOOP β-FUNCTION

1998 ◽  
Vol 13 (08) ◽  
pp. 637-649 ◽  
Author(s):  
S. GROOTE ◽  
J. G. KÖRNER ◽  
A. A. PIVOVAROV
Keyword(s):  
Strong Coupling ◽  
Decay Width ◽  
Fourth Order ◽  
Perturbation Series ◽  
Strong Coupling Constant ◽  
Coupling Constant ◽  
Convergence Radius ◽  
Third Order ◽  
Order Analysis ◽  
Β Function

We extract the strong coupling constant [Formula: see text] from the semileptonic τ-decay width taking into account resummation effects from the running of the strong coupling constant. In the [Formula: see text] scheme. The result reads αs=0.375±0.007 to third-order and αs=0.378±0.007 to fourth-order in the β-function, respectively, where we use the recently computed four-loop coefficient β3. These values for the coupling constant have to be compared with the value αs=0.354±0.005 derived from a third-order analysis of τ-decays. We determine the exact value of the convergence radius of the perturbation series by analyzing the singularity structure of the complex coupling constant plane.

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