scholarly journals The roughness calculation of the basal boundary for the ice-sounding data collected at Princess Elizabeth Land (PEL)

2020 ◽  
Vol 163 ◽  
pp. 04004
Author(s):  
Shinan Lang ◽  
Xiangbin Cui ◽  
Ben Xu
Keyword(s):  
Index Method ◽  
Depositional Settings ◽  
Roughness Index ◽  
Calculation Results ◽  
Antarctic Research ◽  
Two Parameter ◽  
Topographic Structure

In this paper, we calculated the roughness of the basal boundary collected at Princess Elizabeth Land (PEL) to evaluate the topographic structure via the ice-sounding data collected during 32nd and 33rd Chinese Antarctic Research Expeditions (CHINARE 32 and 33). The calculation is achieved by a two-parameter roughness index method, which could differentiate different classes of subglacial landscape, in particular between erosional and depositional settings. Finally, the calculation results of partial regions of PEL are illustrated to describe the roughness of the detected regions.

scholarly journals Characterization of subglacial landscapes by a two-parameter roughness index

2010 ◽  
Vol 56 (199) ◽  
pp. 831-836 ◽  
Author(s):  
Xin Li ◽  
Bo Sun ◽  
Martin J. Siegert ◽  
Robert G. Bingham ◽  
Xueyuan Tang ◽  
...  
Keyword(s):  
Fourier Transformation ◽  
Ice Dynamics ◽  
Depositional Settings ◽  
Roughness Index ◽  
Different Types ◽  
Basal Sliding ◽  
Elevation Data ◽  
Bed Slope ◽  
Two Parameter

AbstractPrevious studies using Fourier transformation (FT) methods to analyze subglacial roughness have shown promise for distinguishing between different types of subglacial landscape from raw subglacial elevation data. We derive a two-parameter FT roughness index {ξ, η}, where • is based on the FT of elevation (as previously considered in isolation), and η is based on both the FT of elevation and the FT of bed-slope profile. In this way, we take account of both vertical and horizontal irregularities in subglacial surfaces. We demonstrate the statistical veracity of using {ξ, η} to consider roughness in terms of obstacle amplitudes and spacing, and consider the use of {ξ, η} in studies of ice dynamics and subglacial geomorphological interpretation. We show that {ξ, η} can be linked to basal sliding rates on the metre scale, and can be used to differentiate further than single-parameter roughness indices between different classes of subglacial landscape, in particular between erosional and depositional settings.

Analysis on Stiffness Reliability for Bus Body Frame Based on Response Surface Method

2011 ◽  
Vol 48-49 ◽  
pp. 228-231
Author(s):  
Da Qian Zhang ◽  
Wei Tao Zhao ◽  
Lian Fang Qin
Keyword(s):  
Response Surface ◽  
Response Surface Method ◽  
Body Frame ◽  
Index Method ◽  
Central Index ◽  
Reliability Calculation ◽  
Surface Method ◽  
Interpolation Technique ◽  
Calculation Results ◽  
Bus Body

This paper describes how to calculate stiffness reliability for bus body frame in the specified case. The principle of the Response Surface Method and solving process of reliability calculation are presented. Designing response surface by central index method and solving undetermined coefficients of unknown function by interpolation technique, the fitted response surface placed on check point is founded. Then failure probability of bus frame is got by Monto Carlo method and corresponding reliability is obtained. The calculation results of a specified bus body show that stiffness reliability of frame is 100% and it is necessary that the structure should be improved because of strong stiffness.

scholarly journals Road Handling Using International Roughness Index and Surface Distress Index Method

2021 ◽  
Vol 1933 (1) ◽  
pp. 012087
Author(s):  
Andrew Ghea Mahardika ◽  
Herawati ◽  
Taufik Rachman ◽  
Budi Nuryono ◽  
Hetty Fadriani ◽  
...  
Keyword(s):  
International Roughness Index ◽  
Index Method ◽  
Roughness Index ◽  
Surface Distress

scholarly journals Application of Two-Parameter Fatigue Charactersitics in Fatigue Persistence Calculations of Structural Components Under Conditions of a Broad Spectrum of Loads

2016 ◽  
Vol 23 (4) ◽  
pp. 138-145
Author(s):  
Grzegorz Szala
Keyword(s):  
Original Method ◽  
Fatigue Tests ◽  
Test Results ◽  
Structural Components ◽  
Load Spectrum ◽  
Method Of Calculation ◽  
Calculation Results ◽  
Fatigue Characteristics ◽  
Damage Summation ◽  
Two Parameter

Abstract The paper presents an original method of calculation of the fatigue persistence based on the adoption of the load spectrum in the form of a correlation table, two-parameter fatigue characteristics and the linear hypothesis of fatigue damage summation. The calculation results by the proposed method were compared with the results of fatigue tests programmed for node-seal construction. On the basis of a comparative analysis of the test results and calculations conclusions regarding the usefulness of the proposed method to evaluate the fatigue persistence of components have been reached.

scholarly journals Analysis of Rectangular Plates on Resting Winkler and Two-Parameter Elastic Foundation Models by Finite Difference Method

2019 ◽  
Vol 9 (4) ◽  
pp. 4490-4494
Author(s):  
T. H. Nguyen
Keyword(s):  
Finite Difference ◽  
Finite Difference Method ◽  
Elastic Foundation ◽  
Difference Method ◽  
Rectangular Plates ◽  
Plate Height ◽  
Plate Size ◽  
Calculation Results ◽  
Two Parameter ◽  
Computational Programming

Analysis of rectangular plates on a rising elastic foundation is common when designing the foundation of civil, traffic, and irrigation works. The current research presents the results of the analysis of rectangular plates on rising Winkler elastic and two-parameter foundation using the finite difference method. The computational programming was done on Matlab. The results of the research verify the accuracy of the FEM and are in agreement with findings in the literature. In addition, this research also compares the calculation results of two foundation models and investigates the change of plate height ratio to plate size.

scholarly journals Road Quality Assessment Using International Roughness Index Method and Accelerometer on Android

2019 ◽  
pp. 62
Author(s):  
Eko Budi Setiawan ◽  
Hadi Nurdin
Keyword(s):  
Visual Observation ◽  
Test Results ◽  
International Roughness Index ◽  
Accelerometer Sensor ◽  
Index Method ◽  
Good Surface ◽  
Quality Detection ◽  
Roughness Index ◽  
Global Positioning

The quality of road conditions can determine comfort in driving. To find out the condition of a road whether it has good surface quality, it can use an accelerometer sensor contained in an android smartphone. This research uses the International Roughness Index (IRI) method combined with the accelerometer sensor and the Global Positioning System (GPS). Application of the results of this study can be used to facilitate the contractor maker and road repair, so they can find out which points need to be repaired. Testing is done using two different vehicles, car and motorcycle. Smartphones with road quality detection applications are attached to the car and motorcycle vehicles using a phone holder. This is to record vibration that occurs while the vehicle is moving based on road conditions. The vibration recording results are then validated in a visual observation to determine the accuracy of the assessment results. Based on the test results the level of accuracy on the car is 90% and the motorcycle is 30%.

Some results of the Barbier-Chalonge-Divan system of stellar classification

1966 ◽  
Vol 24 ◽  
pp. 77-90 ◽  
Author(s):  
D. Chalonge
Keyword(s):  
Early Type ◽  
Parameter System ◽  
Early Type Stars ◽  
Two Parameter

Several years ago a three-parameter system of stellar classification has been proposed (1, 2), for the early-type stars (O-G): it was an improvement on the two-parameter system described by Barbier and Chalonge (3).

Subjective Time Preference and Willingness to Pay for an Energy-Saving Durable Good

2001 ◽  
Vol 32 (3) ◽  
pp. 133-141 ◽  
Author(s):  
Gerrit Antonides ◽  
Sophia R. Wunderink
Keyword(s):  
Willingness To Pay ◽  
Energy Saving ◽  
Subjective Time ◽  
Durable Good ◽  
Discount Function ◽  
Hyperbolic Discount ◽  
The One ◽  
Two Parameter ◽  
Difference Effect ◽  
Better Than

Summary: Different shapes of individual subjective discount functions were compared using real measures of willingness to accept future monetary outcomes in an experiment. The two-parameter hyperbolic discount function described the data better than three alternative one-parameter discount functions. However, the hyperbolic discount functions did not explain the common difference effect better than the classical discount function. Discount functions were also estimated from survey data of Dutch households who reported their willingness to postpone positive and negative amounts. Future positive amounts were discounted more than future negative amounts and smaller amounts were discounted more than larger amounts. Furthermore, younger people discounted more than older people. Finally, discount functions were used in explaining consumers' willingness to pay for an energy-saving durable good. In this case, the two-parameter discount model could not be estimated and the one-parameter models did not differ significantly in explaining the data.

Detecting Random Responses in a Personality Scale Using IRT-Based Person-Fit Indices

2019 ◽  
Vol 35 (1) ◽  
pp. 126-136 ◽  
Author(s):  
Tour Liu ◽  
Tian Lan ◽  
Tao Xin
Keyword(s):  
Experimental System ◽  
Real Data ◽  
Fit Indices ◽  
Random Response ◽  
Person Fit ◽  
Index Method ◽  
Single Person ◽  
Person Fit Index ◽  
Random Responses ◽  
Response Behaviors

Abstract. Random response is a very common aberrant response behavior in personality tests and may negatively affect the reliability, validity, or other analytical aspects of psychological assessment. Typically, researchers use a single person-fit index to identify random responses. This study recommends a three-step person-fit analysis procedure. Unlike the typical single person-fit methods, the three-step procedure identifies both global misfit and local misfit individuals using different person-fit indices. This procedure was able to identify more local misfit individuals than single-index method, and a graphical method was used to visualize those particular items in which random response behaviors appear. This method may be useful to researchers in that it will provide them with more information about response behaviors, allowing better evaluation of scale administration and development of more plausible explanations. Real data were used in this study instead of simulation data. In order to create real random responses, an experimental test administration was designed. Four different random response samples were produced using this experimental system.

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