scholarly journals Multilabel CNN-Based Hybrid Learning Metric for Pedestrian Reidentification

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Yinjun Zhang ◽  
Ryan Alturki ◽  
Hasan J. Alyamani ◽  
Mohammed Abdulaziz Ikram ◽  
Ateeq ur Rehman ◽  
...  
Keyword(s):  
Hybrid Learning ◽  
Research Problem ◽  
High Accuracy ◽  
Identification Rate ◽  
Low Level ◽  
Multilabel Learning ◽  
Potential Applications ◽  
Simulation Results ◽  
Learning Metrics ◽  
Novel Algorithms

Pedestrian reidentification has recently emerged as a hot topic that attains considerable attention since it can be applied to many potential applications in the surveillance system. However, high-accuracy pedestrian reidentification is a stimulating research problem because of variations in viewpoints, color, light, and other reasons. This work addresses the interferences and improves pedestrian reidentification accuracy by proposing two novel algorithms, pedestrian multilabel learning, and investigating hybrid learning metrics. First, unlike the existing models, we construct the identification framework using two subnetworks, namely, part detection subnetwork and feature extraction subnetwork, to obtain pedestrian attributes and low-level feature scores, respectively. Then, a hybrid learning metric that combines pedestrian attributes and low-level feature scores is proposed. Both low-level features and pedestrian attributes are utilized, thus enhancing the identification rate. Our simulation results on both datasets, i.e., CUHK03 and VIPeR, reveal that the identification rate is improved compared to the existing pedestrian reidentification methods.

scholarly journals Simulating Low-Level Laser Propagation From Skin Surface To Lumbar Disc, Knee, Femur and Prostate Gland By Monte Carlo Method

2020 ◽  
Author(s):  
Trinh Tran Hong Duyen ◽  
Tran Anh Tu
Keyword(s):  
Monte Carlo ◽  
Laser Therapy ◽  
Prostate Gland ◽  
Skin Surface ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Laser Propagation ◽  
Low Level Laser ◽  
Level Laser ◽  
Simulation Results

Nowadays, the uses of laser and optics in the medical areas are extremely vivid, especially low-level laser therapy. The light with the wavelength of 633 nm to 1200 nm could penetrate and propagate deep in biological tissue. To develop the low-level laser therapy device, optimizing light delivery is critical to accurately stimulate the biological effects inside the biological tissue. Nevertheless, each form of the tissues at each zone on the body had various refractive optic, absorption, scattering, and anisotropy coefficients. This paper describes the simulation results of low-level laser propagation from skin surface at the lower spine, the knee, the femur and the prostate gland with four wavelengths (633 nm, 780 nm, 850 nm, and 940 nm) by the Monte Carlo method. These simulation results are the base for developing the low-level laser therapy device, that could be used in clinical for treating the fracture, knee osteoarthritis, spinal degeneration, and benign prostatic hypertrophy.

scholarly journals Nonparametric estimation of the measure of functional dependence

2021 ◽  
Vol 6 (12) ◽  
pp. 13488-13502
Author(s):  
Qingsong Shan ◽  
◽  
Qianning Liu
Keyword(s):  
Asymptotic Distribution ◽  
Nonparametric Estimation ◽  
Functional Dependence ◽  
Kernel Estimator ◽  
Real Data ◽  
High Accuracy ◽  
Simulation Results

<abstract><p>In this paper, we propose a beta kernel estimator to measure functional dependence (MFD). The MFD not only can measure the strength of linear or monotonic relationships, but it is also suitable for more complicated functional dependence. We derive the asymptotic distribution of the proposed estimator and then use several simulated examples to compare our estimator with the traditional measures. Our simulation results demonstrate that beta kernel provides high accuracy in estimation. A real data example is also given to illustrate one possible application of the new estimator.</p></abstract>

A Method for Real-Time Radar Signal Main Sorting

2013 ◽  
Vol 760-762 ◽  
pp. 567-571
Author(s):  
Hong Chao Wu ◽  
Wei Hua Xiao ◽  
Jian Feng Pu
Keyword(s):  
Real Time ◽  
Pulse Sequence ◽  
High Accuracy ◽  
Radar Signal ◽  
Sorting Algorithm ◽  
The Real ◽  
Sorting Algorithms ◽  
Key Technologies ◽  
Simulation Results ◽  
Sequence Simulation

The real-time radar signal sorting is one of the key technologies for electronic reconnaissance, first analyzes the defects of traditional main sorting algorithms, and then proposes a comprehensive main sorting algorithm. The method first uses the SDIF algorithm to sort PRI fixed and PRI stagger radar signal, then uses dynamic expansion association method to search PRI jitter radar signal. When using the SDIF algorithm, in order to improve the efficiency of extraction of PRI, first taking amplitude pretreatment, then only accumulate the signals whose amplitude meet certain requirements. After extracting PRI, extract to the original full pulse sequence. Simulation results show that the method of sorting has high accuracy and good real-time.

Iterated Cubature Kalman Filter for State Estimation of Maneuver Reentry Vehicle

2012 ◽  
Vol 466-467 ◽  
pp. 1329-1333
Author(s):  
Jing Mu ◽  
Chang Yuan Wang
Keyword(s):  
Kalman Filter ◽  
State Estimation ◽  
Unscented Kalman Filter ◽  
High Accuracy ◽  
Estimation Accuracy ◽  
Reentry Vehicle ◽  
Vehicle Simulation ◽  
Cubature Kalman Filter ◽  
Simulation Results ◽  
Iterate Process

We present the new filters named iterated cubature Kalman filter (ICKF). The ICKF is implemented easily and involves the iterate process for fully exploiting the latest measurement in the measurement update so as to achieve the high accuracy of state estimation We apply the ICKF to state estimation for maneuver reentry vehicle. Simulation results indicate ICKF outperforms over the unscented Kalman filter and square root cubature Kalman filter in state estimation accuracy.

An Analytical Study on Jitter Accumulation in Interleaved Phase Frequency Detectors for High-Accuracy On-Chip Jitter Measurements

2013 ◽  
Vol 534 ◽  
pp. 197-205
Author(s):  
Kiichi Niitsu ◽  
Masato Sakurai ◽  
Naohiro Harigai ◽  
Daiki Hirabayashi ◽  
Daiki Oki ◽  
...  
Keyword(s):  
Power Supply ◽  
Analytical Study ◽  
Cmos Technology ◽  
High Accuracy ◽  
Spice Simulation ◽  
Supply Noise ◽  
Noise Injection ◽  
Simulation Results ◽  
On Chip ◽  
Frequency Detector

This work presents the analytical study on jitter accumulation in interleaved phase frequency detectors for high-accuracy on-chip jitter measurements. Jitter accumulation in phase frequency detector degrades the accuracy of on-chip jitter measurements, and required to be mitigated. In order to analyze and estimate the jitter accumulation in phase frequency detectors, SPICE simulation was performed with 65 nm CMOS technology. Simulation results show that, with a 50 mV power supply noise injection, jitter accumulation can be reduced from 1.03 ps to 0.49 ps (52% reduction) by using an interleaved architecture.

An acoustic metasurface with simultaneous phase modulation and energy attenuation

2018 ◽  
Vol 32 (23) ◽  
pp. 1850276 ◽  
Author(s):  
Baozhu Cheng ◽  
Hong Hou ◽  
Nansha Gao
Keyword(s):  
Phase Modulation ◽  
Low Frequency ◽  
Layered Media ◽  
Media Theory ◽  
Wave Direction ◽  
Medium Theory ◽  
Underwater Acoustic ◽  
Potential Applications ◽  
Simulation Results ◽  
Effective Phase

We introduced a rigid structure into the acoustic metasurface design, the proposed labyrinth structure is based on the equivalent medium theory and different media are replaced by curly labyrinth. Layered media theory and equivalent medium theory are combined to design the arbitrary acoustic metasurface structure. An acoustic metasurface studied in this paper realized simultaneous phase modulation and energy attenuation in the air, the effective phase modulation range covered from 30[Formula: see text] to 90[Formula: see text] and the energy attenuation is over 40%. According to layered media theory which could modulate the acoustic wave direction, the metasurface with same function can also be applied to underwater case. Corresponding simulation results are calculated by FEA. Finally, by introducing the curly labyrinth theory, the underwater acoustic metasurface with simultaneous phase modulation and energy attenuation is designed and verified. This paper has potential applications in rigid underwater acoustic metasurface designs with low frequency, adjustable direction and sound energy attenuation.

REALIZATION OF LOGISTICAL VENTURE IN CONDITIONS OF RISKS

2011 ◽  
Vol 159 (1) ◽  
pp. 239-252
Author(s):  
Dariusz SKORUPKA ◽  
Artur DUCHACZEK
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Factor Analysis ◽  
Risk Factor ◽  
Potential Risk ◽  
Original Method ◽  
Ahp Method ◽  
Low Level ◽  
Military Bridge ◽  
Potential Applications

The material presents an analysis of a potential risk assessment of operating military bridge facilities. Three types of steel military bridges were analysed: assembled bridges, vehicle-launched bridges and low-level bridges. The material presents an original method of a fatigue risk factor analysis. Furthermore, the author presents potential applications of the AHP method to determine weights for risk factors under analysis. It is assumed that at the further stage of research a thorough identification and quantification of other risk factors will be conducted.

Design Methodology and Jitter Analysis of a Delay Line for High-Accuracy On-Chip Jitter Measurements

2013 ◽  
Vol 596 ◽  
pp. 176-180
Author(s):  
Kiichi Niitsu ◽  
Kazunori Sakuma ◽  
Naohiro Harigai ◽  
Daiki Hirabayashi ◽  
Nobukazu Takai ◽  
...  
Keyword(s):  
Design Methodology ◽  
Thermal Noise ◽  
Delay Line ◽  
Cmos Technology ◽  
High Accuracy ◽  
Delay Lines ◽  
Spice Simulation ◽  
Simulation Results ◽  
On Chip

This work presents the design methodology and jitter analysis of a delay line for high-accuracy on-chip jitter measurements. Jitter generated in the delay lines degrades the accuracy of on-chip jitter measurements, and required to be minimized. In order to analyze and the jitter generation in the delay lines, SPICE simulation was performed with 65 nm CMOS technology. Simulation results show that jitter due to thermal noise can be reduced by enlarging the transistor sizes of both PMOS and NMOS. Based on the results, design methodology of a delay line is introduced for minimizing the jitter generation.

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