A COMPREHENSIVE SYSTEM OF TERRAIN CORRECTIONS USING A DIGITAL COMPUTER

Geophysics ◽  
1962 ◽  
Vol 27 (4) ◽  
pp. 455-462 ◽  
Author(s):  
M. F. Kane
Keyword(s):  
Conventional Method ◽  
Digital Computer ◽  
New Method ◽  
Comprehensive System ◽  
Present System ◽  
Electronic Digital Computer ◽  
Terrain Effects ◽  
Desk Calculator ◽  
Terrain Corrections

The system of terrain corrections uses an electronic digital computer for much of the calculation. A new method using a desk calculator is suggested for terrain effects arising from close‐in topography. The present system covers a square area 40 km by 40 km, with the station at the center. A selected group of corrections that were compared with conventionally computed ones agree within 0.1 mgal. The speed of the operation using the Datatron 220 computer is considerably faster than the conventional method of computing.

scholarly journals Towards a Method for the Accurate Solution of the Schrödinger Wave Equation in Many Variables. I. Formulation of the Method for an Eigenvalue Problem without Symmetry Conditions

1959 ◽  
Vol 12 (4) ◽  
pp. 430
Author(s):  
IM Bassett
Keyword(s):  
Wave Equation ◽  
Eigenvalue Problem ◽  
Digital Computer ◽  
Accurate Solution ◽  
New Method ◽  
Electronic Digital Computer

The aim of this paper and those following is to formulate and explore a new method, suitable for use with an electronic digital computer, for the solution of eigenvalue. eigenfunction problems in many variables, with the aim of applying the method to the Schrodinger wave equation.

scholarly journals GPR Pulse Propagation Topography

2021 ◽  
Vol 36 (5) ◽  
pp. 596-602
Author(s):  
Veli Voipio
Keyword(s):  
Conventional Method ◽  
Ground Penetrating Radar ◽  
Pulse Propagation ◽  
New Method ◽  
Depth Range ◽  
Pulse Radiation ◽  
Ground Penetrating

In this article, I propose a new method for calculating and visualizing the pulse radiation within the depth range commonly used by Ground Penetrating Radar (GPR). The text describes the method and illustrates the propagation with several examples. One conventional method is also applied for a quick comparison. The method can be used to optimize GPR antennas and transmit pulse shapes.

scholarly journals Ultrasound assessed a new method of needle insertion at an angle of 90°to the apex of the sacral hiatus for caudal block in newborns: a randomized controlled study

2019 ◽  
Author(s):  
Shangyingying Li ◽  
Yanzhe Tan ◽  
Fei Yang ◽  
Lifei Liu ◽  
Shengfen Tu
Keyword(s):  
Failure Rate ◽  
Conventional Method ◽  
Local Anesthetic ◽  
Needle Insertion ◽  
New Method ◽  
Controlled Study ◽  
Minimal Risk ◽  
Caudal Block ◽  
Sacral Hiatus ◽  
Method Group

Abstract Background Caudal block is widely used in paediatric anaesthetic practice. Many angles for needle insertion were compared to find a optimal angle during caudal block with high successful caudal injection and minimal risk of complications. The aim of this study is to evaluate the safety and effectivity of a new method of needle insertion at an angel of 90°to the apex of the sacral hiatus for caudal block in newborns. Methods Sixty patients were included in our study, aged 0 to 28 days, posted for inguinal hernia surgery, randomly divided into two groups: a conventional method (CM) group and a new method (NM) group. In both groups, 1 ml∙kg-1 0.5% lignocaine at a rate of approximately 0.5 ml∙s-1 was given for caudal blocks after anaesthesia, and ultrasonographic observation of local anesthetic in the epidural space. Failure rate at the first attempt, puncture frequency, complications, and durations of block were recorded. Results The failure rate at the first attempt of caudal block were 16.7% in the conventional method group and 3.3% in the new method group (p<0.05). The mean time required (standard deviation) to perform needle insertion in the conventional method group was 2.6±0.5 minutes and in new method group 1.6±0.5 minutes (p<0.05). There were three cases aspirating the needle to find blood and one case to find cerebrospinal fluid in the conventional method group. The majority level which the local anesthetic reached are L1 by ultrasound imaging, 86.7% in the conventional method group and 83.3% in the new method group. Conclusion The study found that using the new method, the chance of performing a successful caudal injection can be increased, the time and the risk can be minimized compared to conventional technique. It is a safe and effective method.

A Method for Determining the Flexural Effects of Statically Loaded Beams on Multiple Elastic Supports

1956 ◽  
Vol 23 (4) ◽  
pp. 503-508
Author(s):  
R. A. Di Taranto
Keyword(s):  
Beam Theory ◽  
Elastic Supports ◽  
Electronic Digital Computer ◽  
Simply Supported ◽  
Influence Coefficients ◽  
End Conditions ◽  
Desk Calculator ◽  
Simple Supports ◽  
Fixed End ◽  
Nonuniform Beam

Abstract Herein is presented a means for calculating the static deflections, slopes, moments, and shears of a nonuniform beam on two supports for any end conditions and on three simple supports when subjected to concentrated loads and/or concentrated moments. The method is an extension of a simple tabular procedure as used by Myklestad (1) for use on a desk calculator or electronic digital computer. The procedure is such that it may be easily carried out by one who need not have any knowledge of beam theory. Influence coefficients may be easily and directly calculated for nonuniform beams on two and three elastic supports. The two-support beam is formulated for simply supported one overhang, two supports with linear and torsional springs, and fixed-fixed end conditions. Extensions of this method to any other boundary conditions are indicated.

Method of Examining Surface Cracks on Monocrystalline Silicon

2007 ◽  
Vol 364-366 ◽  
pp. 920-924
Author(s):  
Feng Zhou Fang ◽  
Yu Chan Liu ◽  
Qing Xiang Pei ◽  
Xiao Tang Hu
Keyword(s):  
Conventional Method ◽  
Simple Approach ◽  
Monocrystalline Silicon ◽  
New Method ◽  
Silicon Surfaces ◽  
Surface Cracks ◽  
Absorbed Energy ◽  
Nano Indentation ◽  
Micro Cracks

A new method on examining the micro cracks of monocrystalline silicon during nano indentation is proposed. It is established based on a study of the increasing rate of absorbed energy in nano indentation. This method provides a simple approach in understanding whether cracks on the silicon surfaces occur, while it is tedious in conventional method.

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