scholarly journals Research on White-Line-tracking Walking Technique of NAO Robot

2021 ◽  
Vol 26 ◽  
pp. 565-569
Author(s):  
Wanlong Peng ◽  
Yizhun Peng ◽  
Yuheng Zhang ◽  
Tianye Jian
Keyword(s):  
White Line ◽  
Nao Robot ◽  
Line Tracking

EELS white line intensities calculated for the 3d and 4d metals

1989 ◽  
Vol 47 ◽  
pp. 388-389
Author(s):  
C. C. Ahn ◽  
D. H. Pearson ◽  
P. Rez ◽  
B. Fultz
Keyword(s):  
Experimental Data ◽  
Line Intensity ◽  
Transition Probabilities ◽  
Initial Increase ◽  
White Line ◽  
Hartree Fock ◽  
Line Intensities ◽  
Integrated Intensity ◽  
X Ray Absorption ◽  
The Continuum

Previous experimental measurements of the total white line intensities from L2,3 energy loss spectra of 3d transition metals reported a linear dependence of the white line intensity on 3d occupancy. These results are inconsistent, however, with behavior inferred from relativistic one electron Dirac-Fock calculations, which show an initial increase followed by a decrease of total white line intensity across the 3d series. This inconsistency with experimental data is especially puzzling in light of work by Thole, et al., which successfully calculates x-ray absorption spectra of the lanthanide M4,5 white lines by employing a less rigorous Hartree-Fock calculation with relativistic corrections based on the work of Cowan. When restricted to transitions allowed by dipole selection rules, the calculated spectra of the lanthanide M4,5 white lines show a decreasing intensity as a function of Z that was consistent with the available experimental data.Here we report the results of Dirac-Fock calculations of the L2,3 white lines of the 3d and 4d elements, and compare the results to the experimental work of Pearson et al. In a previous study, similar calculations helped to account for the non-statistical behavior of L3/L2 ratios of the 3d metals. We assumed that all metals had a single 4s electron. Because these calculations provide absolute transition probabilities, to compare the calculated white line intensities to the experimental data, we normalized the calculated intensities to the intensity of the continuum above the L3 edges. The continuum intensity was obtained by Hartree-Slater calculations, and the normalization factor for the white line intensities was the integrated intensity in an energy window of fixed width and position above the L3 edge of each element.

Carl Toldt Centennial, Surgeon and Anatomist

2021 ◽  
pp. 000313482199197
Author(s):  
Giuseppe Serena ◽  
Leonardo Nardi ◽  
Michael J. Schmeisser ◽  
L. D. George Angus
Keyword(s):  
Abdominal Surgery ◽  
Scientific Community ◽  
Anatomical Landmark ◽  
Macroscopic Anatomy ◽  
White Line ◽  
Descending Colon ◽  
Historical Article ◽  
Research Studies

Carl Florian Toldt was an Austrian anatomist who made meaningful contributions worldwide and defined what is one of the most important surgical landmarks in abdominal surgery. Through his research studies, the embryologic dissection plane known as the “White Line of Toldt” represents an important anatomical landmark that helps to mobilize either the ascending or descending colon. His career spanned over 45 years, beginning in Verona and continuing to Prague and Vienna. He was an author of several innovative books and scientific articles regarding micro- and macroscopic anatomy. In addition, he received numerous recognitions and prizes for his work, making him an essential figure in the medical scientific community. Even a street in Vienna, Karl-Toldt-Weg, is named in his honor. The purpose of this historical article is to celebrate and honor Toldt 100 years following his death, remembering his scientific contributions to the medical and surgical fields and giving thanks for his numerous accomplishments. This article brings light to the man behind the eponym.

A Three-Site Reproduction of the Joint Simon Effect with the NAO Robot

2020 ◽  
Author(s):  
Megan Strait ◽  
Florian Lier ◽  
Jasmin Bernotat ◽  
Sven Wachsmuth ◽  
Friederike Eyssel ◽  
...  
Keyword(s):  
Simon Effect ◽  
Nao Robot

Self-Localization in Highly Dynamic Environments Based on Dual-Channel Unscented Particle Filter

Robotica ◽  
2020 ◽  
pp. 1-14
Author(s):  
Chen Hao ◽  
Liu Chengju ◽  
Chen Qijun
Keyword(s):  
Particle Filter ◽  
Humanoid Robots ◽  
Dynamic Environments ◽  
Measurement Unit ◽  
Dual Channel ◽  
Nao Robot ◽  
Unscented Particle Filter ◽  
Monte Carlo Localization ◽  
Switch Mechanism ◽  
Updating Procedure

SUMMARY Self-localization in highly dynamic environments is still a challenging problem for humanoid robots with limited computation resource. In this paper, we propose a dual-channel unscented particle filter (DC-UPF)-based localization method to address it. A key novelty of this approach is that it employs a dual-channel switch mechanism in measurement updating procedure of particle filter, solving for sparse vision feature in motion, and it leverages data from a camera, a walking odometer, and an inertial measurement unit. Extensive experiments with an NAO robot demonstrate that DC-UPF outperforms UPF and Monte–Carlo localization with regard to accuracy.

scholarly journals Adjacent digit fingerprint white line count differences: a pointer to sexual dimorphism for forensic application

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Magaji Garba Taura ◽  
Lawan Hassan Adamu ◽  
Abdullahi Yusuf Asuku ◽  
Kabiru Bilkisu Umar ◽  
Musa Abubakar
Keyword(s):  
Logistic Regression ◽  
Sexual Dimorphism ◽  
Binary Logistic Regression ◽  
Stepwise Logistic Regression ◽  
Regression Analyses ◽  
Forensic Application ◽  
White Line ◽  
Study Population ◽  
Right And Left Hands

Abstract Background Sex determination is one of the leading criterion in identification and verification of an individual. However, the potential roles of differences in adjacent fingerprint white line count (FWLC) in sex inference are not well elucidated in the literature especially among Hausa population. The study was conducted to determine sexual dimorphism and predict sex using adjacent digit FWLC difference (adj. DFWLCD) among Hausa population of Kano state, Nigeria. Methods The study population involved 300 participants. FWLC was determined from a plain fingerprint captured using live scanner. The formula for adj. DFWLCD of thumb and fifth digit is dR15 for right hand. The same applied for possible combination in cephalocaudal direction. Mann-Whitney and t tests were used for comparison of variables between sexes. Binary logistic regression analyses were employed for determination of sex. Results We observed a significantly larger adj. DFWLCD in males compared with females in most of the digit combination. A significant sexual dimorphism was observed in most of the adj. DFWLCD involving ring digit in both right (dR14, dR24, and dR34) and left (dL14, dL24, and dL34). The best discrimination was observed in adjacent FWLC difference of second and fourth digits in both right and left digits (dR24 and dL24). This was further supported by stepwise logistic regression analyses. Conclusion The adj. DFWLCD exhibits sexual dimorphism. The best prediction potentials were found to be dR24 and dL24 for right and left hands respectively.

Teaching braille line tracking using stimulus fading

2014 ◽  
Vol 47 (3) ◽  
pp. 612-616 ◽  
Author(s):  
Mindy C. Scheithauer ◽  
Jeffrey H. Tiger
Keyword(s):  
Stimulus Fading ◽  
Line Tracking
Sign in / Sign up

Export Citation Format

Share Document