A new method for constructing spectral emissivity models for measuring the real temperature of targets

2004 ◽  
Author(s):  
Yang Chunling ◽  
Dai Jingming ◽  
Chu Zaixiang ◽  
Liu Chao
Keyword(s):  
Spectral Emissivity ◽  
New Method ◽  
The Real ◽  
Real Temperature

Single-level anterior cervical fusion: a new method to evaluate the real need for plate augmentation

2019 ◽  
Vol 63 (4) ◽  
Author(s):  
Marco Ajello ◽  
Nicola Marengo ◽  
Paolo Pacca ◽  
Federico Pecoraro ◽  
Francesco Zenga ◽  
...  
Keyword(s):  
Anterior Cervical Fusion ◽  
New Method ◽  
Cervical Fusion ◽  
The Real ◽  
Single Level

scholarly journals Bounding Lagrangian widths via geodesic paths

2014 ◽  
Vol 150 (12) ◽  
pp. 2143-2183 ◽  
Author(s):  
Matthew Strom Borman ◽  
Mark McLean
Keyword(s):  
Sectional Curvature ◽  
New Method ◽  
Finite Width ◽  
Energy Capacity ◽  
Positive Sectional Curvature ◽  
Floer Cohomology ◽  
The Real ◽  
Ambient Manifold ◽  
Open Map ◽  
Geodesic Paths

AbstractThe width of a Lagrangian is the largest capacity of a ball that can be symplectically embedded into the ambient manifold such that the ball intersects the Lagrangian exactly along the real part of the ball. Due to Dimitroglou Rizell, finite width is an obstruction to a Lagrangian admitting an exact Lagrangian cap in the sense of Eliashberg–Murphy. In this paper we introduce a new method for bounding the width of a Lagrangian$Q$by considering the Lagrangian Floer cohomology of an auxiliary Lagrangian$L$with respect to a Hamiltonian whose chords correspond to geodesic paths in$Q$. This is formalized as a wrapped version of the Floer–Hofer–Wysocki capacity and we establish an associated energy–capacity inequality with the help of a closed–open map. For any orientable Lagrangian$Q$admitting a metric of non-positive sectional curvature in a Liouville manifold, we show the width of$Q$is bounded above by four times its displacement energy.

scholarly journals A new method to retrieve the real part of the equivalent refractive index of atmospheric aerosols

2018 ◽  
Vol 117 ◽  
pp. 54-62 ◽  
Author(s):  
S. Vratolis ◽  
P. Fetfatzis ◽  
A. Argyrouli ◽  
A. Papayannis ◽  
D. Müller ◽  
...  
Keyword(s):  
Refractive Index ◽  
Atmospheric Aerosols ◽  
New Method ◽  
The Real

One Method to Construct the S-Box Based on Improved Chaos Map

2014 ◽  
Vol 651-653 ◽  
pp. 2164-2167
Author(s):  
Hang Zhang ◽  
Xiao Jun Tong
Keyword(s):  
Imaginary Part ◽  
Logistic Map ◽  
Block Ciphers ◽  
Mandelbrot Set ◽  
New Method ◽  
Hénon Map ◽  
Henon Map ◽  
The Real

Many methods of constructing S-box often adopt the classical chaotic equations. Yet study found that some of the chaotic equations exists drawbacks. Based on that, this paper proposed a new method to generate S-Box by improving the Logistic map and Henon map, and combining the real and imaginary part of complex produced by the Mandelbrot set. By comparing with several other S-boxes proposed previously, the results show the S-box here has better cryptographic properties. So it has a good application prospect in block ciphers.

Numerical Verification of the Thermodynamic Determination of the Hydraulic Efficiency of Radial Fans

2019 ◽  
Author(s):  
Philipp Epple ◽  
Manuel Fritsche ◽  
Felix Reinker ◽  
Stefan aus der Wiesche
Keyword(s):  
Temperature Rise ◽  
Pressure Rise ◽  
Inlet Temperature ◽  
Numerical Verification ◽  
Hydraulic Efficiency ◽  
Hydraulic Power ◽  
The Real ◽  
Shaft Power ◽  
Real Temperature

Abstract For fans without cooling it is possible to determine the hydraulic efficiency measuring the pressure and the temperature rise through the fan. The shaft work can be determined according applying the first law of thermodynamics for an open system. Without any losses the change of state would be isotropic and the work done equal to the specific heat at constant pressure of the fluid times the isentropic temperature rise in the impeller. Due to the losses, however, the real temperature at the exit of the impeller will be higher than the isentropic temperature since the real process is polytropic. The isentropic temperature at the exit of the impeller can be computed by the isentropic relations with the inlet temperature and the pressure rise. The hydraulic efficiency can be computed as the ratio of the isentropic temperature rise divided by the real temperature rise. In order to verify this thermodynamic approach for the determination of the hydraulic efficiency CFD simulations of a radial fan were performed. In the CFD simulation the hydraulic power, the shaft power, the pressure rise and the temperature rise can be read out and computed directly. In such a way the hydraulic efficiency computed by the ratio of the hydraulic power by the shaft power can be compared by the thermodynamically computed efficiency. In this work this comparison has been performed and the results and the precision of the thermodynamically predicted efficiency are presented and discussed in detail.

scholarly journals I. On a new method of approximation applicable to elliptic and ultra-elliptic functions

1860 ◽  
Vol 10 ◽  
pp. 473-475
Keyword(s):  
Geometric Mean ◽  
Elliptic Functions ◽  
New Method ◽  
Square Root ◽  
The Real ◽  
Rate Of Approximation ◽  
Real Application ◽  
Harmonic Means

I found my method on the known principle, that the geometric mean between two quantities is also a geometric mean between the arithmetic and harmonic means of those quantities. We may therefore approximate to the geometric mean of two quantities in this way:—Take their arithmetic and harmonic means; then take the arithmetic and harmonic means of those means; then of these last means again, and so on, as far as we please. If the ratio of the original quantities lies within the ratio of 1 : 2, the approximation proceeds with extraordinary rapidity, so that, in obtaining a fraction nearly equal to √2 by this method, we obtain a result true to eleven places of decimals at the fourth mean. I name this merely to show the rate of approximation. The real application of the method is to the integration of functions embracing a radical of the square root.

Perfect Dynamic Model and Optimal Design of Vibration-Impact Rammer

2011 ◽  
Vol 422 ◽  
pp. 525-528
Author(s):  
Ke Chen ◽  
Zhi Shan Duan ◽  
Jia Qi Fei
Keyword(s):  
Optimal Design ◽  
Real Time ◽  
Dynamic Model ◽  
Computer Programming ◽  
New Method ◽  
Body System ◽  
The Real ◽  
Vibration Impact ◽  
Plastic Theory

In order to find a better method of optimal design of vibration-impact rammer, perfect the dynamic model of vibration-impact rammer. Based on the viscoelastic-plastic theory of soil body, the dynamic model and equation set of vibration-impact rammer and soil body system are built. After computer programming, the real-time working data of vibration-impact rammer is obtained and a new method for optimal design of vibration-impact rammer is provided.

A New Measuring and Calculating Method for Concrete Thermal Conductivity with Multipoint

2013 ◽  
Vol 671-674 ◽  
pp. 1657-1660
Author(s):  
Sheng Qiang ◽  
Chao Wu ◽  
Nan Nan Zhang ◽  
Zhi Qiang Xie
Keyword(s):  
Thermal Conductivity ◽  
Stress Field ◽  
Thermal Field ◽  
Measuring Method ◽  
New Method ◽  
Mass Concrete ◽  
Calculation Formula ◽  
The Real ◽  
Calculating Method ◽  
Simulation Results

The real thermal parameters always have inevitable influence on the simulation results of the structure thermal field and stress field in the construction of mass concrete. A new measuring and calculation method for concrete thermal conductivity was put forward. Eight or six sensor points measuring method and calculation formula are present, and the latter is the simplification of the former. Comparing the real thermal conductivity with the calculation result by the new method, it can be seen that the thermal conductivity can be obtained within about 6 day’s age at site and with the accurate degree of 98%. The new method will provide an efficient way for the concrete structure researcher and designer.

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